how to get whiteboard marker off whiteboard


And removes the clear coating on the board. Toothpaste is also one of the cheaper things to use because you do not have to use very much and it doesnt take the erasable surface off. Sponges & Cloths: Watch What You Wipe With! (NOTE: these options could damage your board and cause further issues). % The writing had been on the board for years. Your email address will not be published. Tried baking soda and vinegar, toothbrush and lots of elbow strength. You may have to leave the oil on the sticky area for a while (like overnight), but it does not have to be a thick coating. You simply write, erase and repeat. I tried the hand sanitizer before and that didn't work. Avoid using abrasive cleaners as well as wax-based solutions, which may leave a thin film on the whiteboards surface. Been using this method for years and works every time!! Tub O Towels heavy duty wipes are made to stand up to all kinds of messes and stains, and are the quick answer when you need to know how to get marker off a dry erase board. Alcohol + baking soda it worked. If you dont have rubbing alcohol, draw over the old stains with a new, dark colored dry erase marker, and erase as you normally would. To erase old marks off a dry erase board, wet a sponge with rubbing alcohol and rub it onto the stain, wiping the area clean with a dry cloth. Just be sure to select a method that wont damage the dry erase board. The most affordable and commonly available dry erase boards are made using melamine. At first I had to rub the writing really hard. Then, wet a clean rag or paper towel with water and wipe the board to remove any remains of the cleaning product so it doesnt interfere with the marker during the next use. Dont used any kind of solvent or alcohol on any whiteboard. I felt inspired! No, but excessive coloring in the toothpaste could stain the board. Worked like a charm- better than the nail polish I had been using. Try using car wax or furniture wax to your board. What finally worked was hand sanitizer and Mr Clean Magic Sponge. Alcohol also works if you accidentally use permanent marker on a white board (or tupperware etc.). Acetone attacks plastics. Good old WD40 use this for everything and it was the only thing that also restored thew surface as well as making it sparkly clean. I even tried using my dremel sanding bit and a putty knife to see if those would work. Melamine and coated surface boards can be stripped by alcohol or abrasive cleaners. Nail polish remover (acetone) worked better than just about anything else I tried. Hi Monique, rubbing alcohol should do the trick and is non-toxic. Toothpaste was the winner! Thanks so much!! 4 0 obj So, I tried adding baking soda to it and voila! I have just become the guru of sandwich board repair. It looks worse than before. I now have a minty clean, well-conditioned board to write on. Can you use Windex to clean a dry erase board? Keeping a whiteboard clean may seem like an easy task, but regular maintenance is essential to ensure its longevity. Support wikiHow by Otherwise the dry erase removes the marker, but you can still see a faint outline of what I wrote before, which annoys me lol. Switched to WD 40 elbow grease added did the trick so how do I get the WD 40 off? The toothpaste did the job. Once stripped, any future writings will severly stain the board, rendering it useless. Pumice is an abrasive. All it did was smear and make the board blue; but the toothpaste got everything off! I had ink that had been on my board for years. Michelle Driscoll, a cleaning expert, notes: "Rubbing alcohol or hand sanitizer can also be used to remove permanent marker from a dry erase board!". Save my name, email, and website in this browser for the next time I comment. Mechanic orange hand cleaner with pumice work for me. I do have a major problem with a certain brand of dry erase pens. This will work well to erase permanent marker from the dry erase board. Dispose of the paper towels responsibly. I had a board that I just could not clean. As I started to use the advanced cleaning products, it started to wear off the paint, reveling even more ink. But what happens when erasing doesnt quite work? Heavy Duty Hand Cleaner 128 oz. Disclosure: BobVila.com participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for publishers to earn fees by linking to Amazon.com and affiliated sites. Quartet boards are excellent. Welcome To The Cleanest Place On the Internet! Hey Melissa! Loyal Quartet employee right there folkskinda sounds like a reason NOT to buy a Quartet board to me. Tried the Vinegar, tried Bleach wipes, tried Simple Green cleaner. Heres how: Getting marker off of a dry erase board has never been easier with the cleaning power of Tub O Towels heavy duty cleaning wipes. I use a magic eraser. If the stains are still visible, repeat the process for the best results. I saw you listed muscle cream and I happen to have some, and it worked like a charm. This trick also works to erase markings from dry erase markers that have stained the board. This is an extremely powerful solvent so please use this with care. I thought I would try the simplest one first. It also lubricates and conditions the board. After a while, dry erase markers can leave semi-permanent stains. The thing about alcohol is that if you use it too much, the white board will dry out. Simply grab a fresh dry erase marker and draw over the stained area with it. For tough stains, rub a few drops of isopropyl alcohol around with your finger on the old marks. It has happened to my board. Share your advice in the comments. Less is better, you still have to clean up the mess but at least you can do that with warm water, liquid dish soap, and a rag. Toothpaste worked the best for me. I cannot seem to get it off. Similarly, avoid wiping a whiteboard with your bare hands because the oils from your skin can penetrate the surface and cause damage over time. If so, dont panic; it doesnt mean your whiteboard is ruined. If you want to learn how to use other products, such as baking soda or hairspray, keep reading the article! Melissa has appeared on the Today Show, and has been featured in InStyle, Real Simple, and Better Homes and Gardens. Whether youre diagramming quantum physics, brainstorming with a group or just playing a game of tic tac toe, theres nothing quite like a crystal clean white board to make your ideas come to life. Can I use window cleaner to clean my board? Tooth paste for the win . So, you need to get marker off of a dry erase board. Then, use a wet towel to wipe the board clean. I used hand sanitizer on a micro fiber hand towel and if wiped right off!! And like every human whose ever used a whiteboard, Im perpetually disappointed with the felt eraser provided with the white board. It streaks, leaves dusty crud behind, doesnt get everything off etc. Further, heaven forbid you leave anything on your whiteboard longer than a week, it becomes nearly impossible to wipe off. Youre always left with something, a little ghost of ideas past. Mistake! Be sure to try it in a small area of the board first. Wipe down with a wet cloth after and the board literally looks like new. Orange or lemon oils, peanut butter, mayonnaise, olive oil, etc. And after youre done and your arm is sore, you can use the cream for the pain and soreness. After I wiped off both sides of the board, I towel dried it and finished it with WD40 and a paper towel. Ive got an even BETTER solution for you! The board in my new room had a lot of dried marks from markers of, "My dry erase board sat for 2 years. Erase what you've written over as you normally would. WD40 worked like a charm. Copyright 2022 | Clean Digital Productions Inc. | All Rights Reserved, Summer Cleaning Checklist: 6 Cleaning Tips, Essential Oil Recipes: Aromatherapy, Cleaning, & Self-Care, How to Get Rid of Smelly Shoes: DIY Shoe Powder, Oxygen Bleach: The Effective & Safe Alternative, Citrus Power: Cleaning with Orange Essential Oil. Another simple way is to write over the old marks with the dry erase marker and immediately wipe it off. You can erase old marks from a dry erase board using many safe, non-abrasive household items. I didnt have bad stains, however. If the stain is more than a year old, put some plastic wrap over the margarine and wait 24 hours before wiping the board clean. ", The next time the writing didn't budge. I actually did this with a large white board laying on the floor and did all the elbow grease before mounting it on the wall. Time and again, my whiteboard never looks, well, white. Use enough alcohol to leave a thin layer. I had the liquid chalk/dry erase markers on there for months, I used a clorox wipe, but it stripped the writable surfaceI dont know how to fix this new problem. Vinegar No. It may take a couple of applications before the marks are gone. Cleans anything! WD 40 removed a little bit toothpaste really did the trick for market that had been baking in the sun for a year. Awesome!! What about stickiness from tape,? Whiteboards have replaced blackboards in many classrooms and are also commonly used in workplaces and home offices. pen+GEAR This is more like a permanent marker; I could not even get it off Before it dried. Driscoll received her Masters in Public Health from the Colorado School of Public Health in 2016. Thanks!!! I tried today and it works beautifully! Glass or plastic surface should be ok, fabric or paper, not so much. The best practice for keeping your whiteboard clean is to erase any markings when youre done using it. Alcohol the white board even said it tickled, so didnt work! Many hand sanitizers contain rubbing alcohol. Wouldnt be my choice nor all the abrasives like toothpaste. Bengay does the job with some elbow grease and muscle. Cleaning your dry erase board regularly will keep it in good condition for years to come. 99% Rubbing alcohol works perfect. I. Last Updated: March 22, 2020 THANK YOU I WAS IN SO MUCH TROUBLE WITH ME GRAMMA! Or, theres the mishap where someone thought they were using a dry erase marker but it was really a permanent marker. What would work well but isnt very toxic? Acetone is combustible. Next time I will take picture and show you how great it is. I tried every one of these suggestions and nothing worked. For whiteboards that have been written on with permanent marker. Hey everyone! Tub O Towels wipes contain our special Bond Buster technology, which does the work for you, making it easy to quickly wipe away marker without damaging the dry erase board. Wed love to here them. Do you have any tips and tricks for keeping your dry erase board looking new? I tried the hydrogen peroxide, the ink was too dry. << /Length 5 0 R /Filter /FlateDecode >> Dry erase boards are typically made from melamine, porcelain, or glass. Learn how your comment data is processed. What can I use to "condition" the board after cleaning it? Eh, I can finally use the board. Many simple products in your kitchen pantry and under the bathroom sink can remove the toughest stains. So if the ink (especially the metallic) is sun-dried and beyond stuck on the board or if some idiot acrylic paints your dry eraser board a generic clay sculpting/scraping tool, some elbow grease, and WD40 is your answer. I paid a ton of money for it. Isnt so bad that I cannot write on top of it. Just a note to be very careful when using substances, other than whiteboard cleaner, on your whiteboard. This may work, but you may not be able to wipe the board perfectly the first time. By following these four steps, youll be able to keep your dry erase board looking new for years to come. Schools Out! Before cleaning your whiteboard, first, establish what its made of. Instead of her looking up any of your great suggestions on how to clean dried (waterproof) marker off the boards, she globbed on coats of paint (likely chalkboard paint) between marker usages. "I have some signs that have a dry erase surface. xKq)Z"m{|qEEJXv>,b }CVUVO@&ywe=?wjo7zoMo|Xz7eoUGn~?Vf=y}vDx|};>,.rA_Qmggmw\X~#Tj?>~o/P?u_\L|NP%L[&=w%(uQJHy_at ~q>?j9__vbPvtf7u@j ja;?dxmfQtL?2S3)n/6oA*] ](f*5nC t}4`3u*%j%YpsHC3ot;WXsgHUz/z%CrREZ}5B=6;p@T~H&#h0=&T"_|Tj_(u{`! For a more thorough regular cleaning, a damp cloth will suffice. How do I get Sharpie marks off a dry erase board? High Quality, Glass Dry Erase Boards | Best Glass Whiteboards and Blackboards, Moving Forward In A Fast Changing, Uncertain World. Did you know you can get expert answers for this article? But I left it on too long and bugspray is the winner. By Savannah Sher | Published Aug 25, 2021 11:10 AM. What is something I could use if the marks have been on for 8 years? Pour a small amount of hand sanitizer, rubbing alcohol or non-acetone nail polish remover onto a clean, soft rag or paper towel to wipe away the ink. Sign up for wikiHow's weekly email newsletter. 91% alcohol did almost nothing, peroxide was slightly better than alcohol. For stubborn dry erase marker stains, you may need to repeat the process. Thanks for the ideas. Your email address will not be published. %PDF-1.3 Use the same permanent marker to trace over the marks and wipe clean with Alcohol. WD40 then I cleaned it and now Im so happy! I just tried toothpaste based on your comment and YES!! Whether the surface to be cleaned is horizontal or vertical should guide your choice runny oils are better on horizontal surfaces only. ", then tried the WD-40 method, which took off most of the writing but left large smudged areas. Alcohol is definitely the thing. BENGAY! Most of the marker stains were removed. Privacy Policy. Use thooth paste, It helped perfectly for me. Test on a small area first just in case the oil and the surface to be cleaned dont play nice together. Ill use a furniture polish to recondition the surface once clean. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. You will find that all or part of the offending "permanent" marker is gone if you follow these easy steps. Pump Dispenser. This saved my whiteboard! "It has taught me how to clean my mini whiteboards correctly because all this time I have been putting them in. Probably the slight abrasion does the trick. I used a magic eraser, some hand sanitizer, and elbow grease worked like a charm! Time for Teachers to Veg Out. Can I use water to clean my dry erase board? stream I just cleaned 10 year old dry erase writing from my board perfectly. A lot of elbow grease though. Expert advice from Bob Vila, the most trusted name in home improvement, home remodeling, home repair, and DIY. At our preschool, we have used alcohol and alternatively, nail polish remover. If the mark is permanent marker, use a paper towel to rub white toothpaste onto the stains. The board will stay clean and moisture (the pen will slide again). Finally a clean board! Be sure to make sure all the residue from the toothpaste is cleaned off otherwise youll receive complaints from people that the markers dont write very well any more. unlocking this expert answer. Yes, but it doesn't work very well on old marks. Paint Nail Polish remover or Acetone onto stubborn stains and polish with a Micro Fibre Cloth. Were confident that youll love Tub O Towels for all of your tough cleaning needs. (236.5 mL) water. And a lot of elbow grease. It looks quite close to new again! I grabbed my bosses hand sanitizer and some paper towels and went to work. Copyright 2022 Acton Media Inc. All rights reserved. Be sure to remove all of the margarine so it doesnt prevent writing on the board. Hand sanitizer is a great way to remove old marks, but do not use nail polish remover. Then do a follow up with toothpaste. You can also clean off old marks with spray deodorant. WD 40Nopes I have tried googone and alcohol and also hand sanitizer. The board is resilient and held up perfectly during the operation. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/bb\/Erase-Old-Marks-off-a-Dry-Erase-Board-Step-2-Version-5.jpg\/v4-460px-Erase-Old-Marks-off-a-Dry-Erase-Board-Step-2-Version-5.jpg","bigUrl":"\/images\/thumb\/b\/bb\/Erase-Old-Marks-off-a-Dry-Erase-Board-Step-2-Version-5.jpg\/aid19350-v4-728px-Erase-Old-Marks-off-a-Dry-Erase-Board-Step-2-Version-5.jpg","smallWidth":460,"smallHeight":259,"bigWidth":728,"bigHeight":410,"licensing":"

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\n<\/p><\/div>"}. All were attempted with microfiber cloth. Industrial glass cleaner didnt work, but Goof off Graffiti Spray remover works in seconds. Approved. Youll find a number of suggestions online, a few of which are highlighted below. I scrolled back through the article and finally tried the white toothpaste. Follow with Whiteboard Cleaner. Hope this helps . Now it sure can be used again. How do you clean a dry erase board eraser? Lockable Weather Resistant (TX) Notice Case, 3 Fast And Fun Whiteboard Brain Exercises That Boost Your Memory, Custom WhiteBoards and PinBoards - Options, Glass Whiteboards. Thank You!!! years gone by. Ideally Permanent Markers should be kept well away from Whiteboards, but for those who cannot resist here are a few nifty solutions that werecommend you try; Remember when it comes time to acquire new boards,Porcelain Whiteboardsare easier to clean even when mistakes are made. Yes, that works too although the rubbing alcohol gets rid of the slight discoloration on the board that this technique wont! And I realized I was using a dry-erase board for its unintended purpose. Even other brands of board cleaners may cause issue with some Quartet boards, due to the protective coating they use. Michelle Driscoll is the Owner of Mulberry Maids based in northern Colorado. Rubbing alcohol, hand sanitizer, nail polish remover containing acetone, vinegar, and Windex are all safe to use on a whiteboard. To remove permanent marker from a dry erase board, use a dry erase marker to completely cover the permanent ink. I soaked the board with comet, vinegar, baking soda, goof off, but to no avail. How to Clean Dry Erase Boards: 10 surprising tricks. You have entered an incorrect email address! Amazing stuff. I tried most of these The alcohol works great on not so old stains; but, toothpaste is amazing! How to Use Your Whiteboard Monthly Planner, Where to Get the Best Whiteboard in Australia, Why Your Classroom Needs a Mobile Whiteboard, A Buyers Guide to Purchasing Glassboards Online, Custom Whiteboards - You Need it, We Make It, Flipcharts - Low Tech, High Effectiveness, Planner for the week - Why Whiteboard Planners make sense, The Benefits of using Whiteboard Room Dividers. Now its your turn. Give it a try and see what you can do with your white board! Every week, Melissa delivers new videos dishing expert advice on cleaning products, tools, DIY substitutes, and practical, timesaving solutions to everyday problems. However, it worked on some but not on others. This article has been viewed 1,998,017 times. ", board cleaner, soap, water, you name it. Cleaning your board can be very simple and you wont even need too much elbow grease. "Excellent tips. Allow it to dry, then use a whiteboard eraser to remove the fresh markings, and the old stains should be erased in the process. (Alas, one of those accidental discoveries). Rub them directly on the old marks and wipe off of the board. Mr. Clean Magic Eraser worked for me. References I tried all of them and toothpaste works the best! Im a special education teacher in California and Ive developed the #1 Whiteboard Eraser on the Planet! wikiHow marks an article as reader-approved once it receives enough positive feedback. Adhesive residues from tape, labels, and such will frequently (not always) dissolve in food oils. Use a clean, dry cloth to dry the board. Might take more than one attempt but it works. Good as new! If it does get stained, however, there are ways to make it look brand new again. I got to work, and within one gentle wipe, all of those stubborn marks came off with ease and literally no effort. Look! Only try this if the other methods don't work, because scrubbing the board with the eraser could potentially damage the surface. This article received 25 testimonials and 80% of readers who voted found it helpful, earning it our reader-approved status. Windex. Everything you need to know about glassboards, How a glass notice board can bring staff together, Whiteboard Erasers why having one that works properly is so important, Hit the road: why you should invest in a mobile glass whiteboard, Achieve Your Goals With A Monthly Planner Whiteboard, Clear glass whiteboards, walls and fixtures: How glass is used in interior design, A Whiteboard Wall in my Classroom changed my Life, Double sided Whiteboard / Flip Whiteboard, Glassboards for the Classroom | no stains , no ghosts. When I erase, I rub a little chalk dust on the eraser first, and it takes all the marks off. Its the only thing so far that has taken this marker off my garage door. Help For Stains That Went Through The Dryer, Make Your Own Mod Podge for Decoupage Crafts. Also, on my classroom boards, I use a wool felt chalkboard eraser instead of the dry erase erasersmuch better at getting them clean, immediately and a few days later. I found a product called Original Krud Kutter works great (surprised me!) Does your board still dry erase? Rinse the cloth with cold water and use it to rinse off any remaining cleaning solution. However, if the board is heavily stained I could see hand sanitizer probably not cleaning it all. acetone-free nail polish remover also works a treat . Savannah Sher, Make Your Home Less Chaotic With These 12 Simple Changes, The Best Pencils for Writing, Sketching, and More, 50 Things Every Homeowner Should Know How to Do, 10 Cleaning Chores You Should Be Doing Every Month. Melissa Maker is an entrepreneur, cleaning expert, founder of Torontos most popular boutique cleaning service, and star of the Clean My Space channel on YouTube (but she still hates to clean!). Once youve removed any visible stains, its time to give the entire board a thorough cleaning. If you arent satisfied with the remarkable cleaning ability of Tub O Towels, we will refund your purchase price. Im an artist and fortunately have clay sculpting tools basically assorted shaped scrapers. To the hardware store I go, and I shall purchase the special white/grease board paint to renew the surface and make it look like a fresh writing surface. Use a pencil eraser to rub the mark. Hand sanitizer didnt work, clorox bleach wipes worked a little, peroxide did not work at all. We use cookies to make wikiHow great. Thanks for the tip. Pinboards Vs Whiteboards - Which One Should You Choose? Ill use that first next time! Vinegar and baking soda! The old marks will disappear at the same time as the new one. We know that chlorine bleach is a huge no-no. If you want to learn how to use other products, such as baking soda or hairspray, keep reading the article! Over 5 hand fulls of crap was scraped off the board. It took me over 2 hours but I was able to scrape down to the ribbed eraser board. IMPORTANT: Do not use abrasive cleaners or toothpaste as suggested on some sites. "I was required to change classrooms at school. Now the board is white, looking almost brand-new. Keep in mind, however, that melamine boards are most susceptible to permanent staining and ghosting and may not respond to this technique. The Comet cleaned off the marks, but now the dry erase markers leave a shadow. I tried hydrogen peroxide on a cotton ball to remove the leftover stains. Goof Off makes a graffiti remover spray. I had a bottle of rubbing alcohol in my office (which is perfectly normal if you do what I do) and recalled hearing that rubbing alcohol gets any whiteboard clean. of spilled coffee! The toothpaste did the trick. Always wait until the markings have dried completely before erasing them to avoid ghosting, but note that markings that stay on the board for longer than a day or two are more likely to leave stains behind. Squeeze Bottle, Heavy Duty Hand Cleaner 64 oz. By using our site, you agree to our. Nothing would work. Using anything besides Quartet Cleaning Solutions or just water on your Quartet board will void the warranty. These will permanently destroy your Whiteboard surface. Heres what sets our wipes apart: See for yourself how easy it can be to remove permanent marker from dry erase board and leftover dry erase marker, and why Tub O Towels heavy duty wipes are the best cleaning wipes you can buy. Theyre available on our website or at leading retailers. By using 95% alcohol, it came off with zero effort. Be VERY careful with baking soda as it is an abrasive and can ruin the finish on your whiteboard. I hear car wax work well, but are there any other methods? I searched the internet and came to your site. After I worked the toothpaste in, I followed up with the Expo cleaner. My board has writings on it from a few years ago. Spam cooking spray reconditions the coating. Worth a shot. At first look, I thought maybe it was food or something caked on the board. I tried the Comet second, and it worked perfectly. toothpaste works board smells great too. What a mess! Its called, Teachers Pet, and it not only cleans a whiteboard like nothing else on the planet but it also does quadruple duty as a keyboard/bookshelf duster, a monitor/glass cleaner AND it also soaks up at least 24 oz. Recommended cleaning methods are similar for all three materials, but certain chemical products may negatively affect whiteboards made from melamine, which can be porous. Your email address will not be published. Another good solution from the garage is WD-40. Thank you! Abrasive cleaners like toothpaste, Comet, and baking soda all contain tiny particles that can scratch the surface of a dry erase board. I tried regular Expo whiteboard cleaner to no avail. Enter your postcode to check eligibility: Request advice from our experts tofind the best solution, Using a quality dry-erase whiteboard marker, carefully trace over each & every "permanent" mark you wish to remove, Clean with a Micro Fibre Cloth or Eraser then follow with Whiteboard Cleaning Spray. I have one! Wait 10 minutes and then use the whiteboard eraser or a clean rag to wipe it. I have a finish on the garage door like dry erase and its awesome. I instead used baking soda, with just a touch of the alcohol for the baking soda to stick with it on the cloth I used. Yeah baby! Look at this tissue, its full of marker stains that I would otherwise never have been able to tackle. By signing up you are agreeing to receive emails according to our privacy policy. If marker residue still remains, use a second wipe until your board is completely clean. Vinegar didnt work, sanitizer didnt work. thanks for the tip, Jim!! Dont let the tracing dry. I lent my double-sided sandwich board to a store I rent a space in. I found this article and started trying a few of the suggestions. For everyday cleaning, simply use a felt whiteboard eraser. Peroxide HELL NO It only removed some. So today I tried toothpaste, it worked. Then I chipped a little piece of the ink off with my fingernail, and eureka! Thanks all!!! I didnt try any of the other ideas. Check us out at http://www.teacherspet4u.com. It is the bane of every teacher and public speakers existance dry erase marker stains that wont come off your dry erase board. I wish I could post a picture. Thank you for the tips! Spray it on and let it sit for a few seconds, then wipe dry. ", How to Erase Old Marks off a Dry Erase Board, Unlock expert answers by supporting wikiHow, http://cleanmyspace.com/remove-marks-stain-from-your-white-board/, https://www.hunker.com/12000894/how-to-restore-a-dry-erase-board, http://www.howtogetridofstuff.com/how-to-get-rid-of-white-board-markings/, http://www.reallygoodstuff.com/community/eco-friendly-ways-to-clean-the-classroom/, https://www.ontimesupplies.com/office-supplies-online-blog/helpful-hints/how-to-clean-dry-erase-boards-10-surprising-tricks/, borrar viejas marcas en un pizarrn de borrado en seco, Cancellare le Macchie Vecchie da una Lavagna Cancellabile a Secco, retirer les marques sur un tableau blanc effaable sec, Rckstnde von einem Whiteboard entfernen, Oude inktresten van een whiteboard verwijderen.