Instruction: Answer the given question using the supporting document.

Input:
Question: HELP.  I got this today, it worked great, couple hours later, tried and now I get white scuff marks.  I rinsed it, didn't help.  What did I do wrong?
Document: It worked great when it arrived. Then I needed to clean it. The directions say that you should rinse it under warm water to clean the oils off of it. I've done so several times but it doesn't seem to get the original oils off of the roller and I end up just using a cloth to clean the smudges that this thing leaves behind.
I was sceptacle but the reviews and video won me over. I JUST got mine in the mail and tried it for the first time, I was so amazed I purposely smudged my screens in my kindle, iPad and iPhone just to use it! It works exactly as it says and I adore how portable it is. Not more expensive screen cleaner cloth or liquids that get used up way too fast. I'm totally buying another one just to keep at work!
i used this roller and it didn't clean my tablet at all. Waste of money. I know someone that has this and she loves hers but it didn't work for me. Very disappointed. I was looking forward to useing this but it didn't work for me. Tried a couple of times so now it's laying in the drawer.
I really need to get another iRoller as a back up, because everyone in my office wants to use it. I love how it removes the lint from my Note 3 screen as well as my finger prints. I also use it on my lap top screen. It's a small efficient dynamo, I give it 5!!!!! marks.
This thing is amazing!! I have used it on my Kindle Fire, iPad mini and Samsung Galaxy phone and it removes every smudge and fingerprint immediately. I haven't tried to wash and reuse it yet but frankly it is so good I would still be happy if I had to buy a new one each time as it seems like it works for a good number of applications anyway. I am off to order a couple more. Really good product that does exactly what it says it does.
This item is vastly over-priced, and to make things worse, it only worked one time. It doesn't work for me anymore. I get much better and very satisfactory results with a small microfiber cloth. I advise against buying this item. It's a piece of junk in my opinion.
I first thought that this is a great idea, but how? Then the price stopped me until I knew I needed this or something like it. So I have used it and it works great. Don't roll it fast, and for harder marks slightly move it in a circular motion. It is better to just let air dry once cleaned.
After removing the plastic, I tried it on my iPad again and, sure enough, angels sang and bells rang--it works great! The manufacturer must put this on to keep it from drying out until purchase but I never noticed it before now.I am sure that I am not the only dummy (and I really am advanced when it comes to computer devices usually!)
I cannot believe that there are not thousands of more reviews here. This wonderful,yet elegant device works perfectly. No more microfiber or chamois cloths,spitting on screen,wiping with shirt.This is it.Rinse under water every now and then before you sleep and you are ready to go again-no deterioration in effectiveness. It dries in a couple of hours-maybe sooner though,since I did not check before and will also depend on ambient temperature.
The iRoller does a GREAT job of cleaning your Kindle Fire(s) screen, no matter which one(s) you have. On the Kindle Fires and Kindle Fire HD you can really tell the difference. I was amazed at how great it cleans the screen, like no other product I have used. I love it, and highly recommend it. I even ordered my son one for his family's Kindles. He raved about how great it worked, too.
Answer: Unlike one of the responders to your question, I have used my iRoller on my laptop screen and it works great for me.  I also use it for my cell phone and for my iPad without problems.  I did not experience any scuff marks or scrapes or tracks with its use.  I have also rinsed it off and dried it before using due to a dog who got a hold of it and shared it with a cat, so it got multiple hairs on it.  It worked great after that as well.  I'm wondering if you got a defective unit of some kind.  You might consider returning it and getting a replacement just to make sure.  Other than that, I don't have any other answer for you.  Sorry!