Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: I have a 3-disc CD player.  Is the cleaning disk good for more than one use, or is it single use only?
Document: I trust Memorex, so I bought this to use in my DVD player, which is a pretty expensive Panasonic model. I put the disk in but the DVD player couldn't read it. I got "unreadable" disk errors. Just to test it, I put it in my CD player. The CD player could read the disc. I let it run through one test, but it gave me some pretty lousy results - the program incorrectly identified which speakers were front, center, rear--indicating that I had my system mis-configured, which I did not.
If you've even owned a phonograph player, you periodially cleaned the needle  because of lint and dust. It's the same with the laser lens on a CD/DVD media player. They need to be cleaned of lint and dust and the easiest way to do this is to use a CD/DVD cleaning disk. I've owned other CD/DVD lens cleaning disks but the Memorex Lens Cleaner is one of the better units around. It also includes a sound optimization tool that walks you through the optimizing of your sound system speakers.
I bought this from walamart (only lens cleaner they had to offer) for my Mazda 3... After putting an old CD in there it now says'Check CD' and wont play anything....I put this cleaner disc in and it said 'Check CD' then the screen went blank and nothing happened.....it didnt really come with any Real directions so im nit sure what to think...needless to say it is NOT for use in your car's CD player...its going back to walmart
I tried this on two different cd player drives and a dvd player drive.It did nothing to improve any of them. The dvd drive was working before using the cleaning disk, but didn't work after using it.I thought before this that Memorex made a good product. I was wrong about this one.Buyer Beware!
I looked on Amazon to see which DVD cleaner was the "best", and this one was rated highly. So I invested the $9 on this item and took it home. Easy enough to use, just open it and play it in your DVD player. Unfortunately, it didn't fix my problem. I was having disk read errors and lots of skipping while playing movies, and afterward I was able to load a disc it was having trouble reading, once, and then it would freeze again. Another disc that loaded to the menu and then froze immediately upon playing the movie, and after that it was consistently giving me a "no disc" message.
I Order this on May 13, 2012, and received it at home on May 22.I placed it in my Zenith ZRY-316 DVD VCR standalone Combo Recorder. But after a Few secs, it just stated "Error Unkonwn Disc" and ejects the disc.I tried it about 3 times again and it keep saying the Same thing.I followed the Instructions which states after inserting to Follow the Audio Instructions but it does Not even reach this Far. the DVD says reading and after a few secs ""Error Unkonwn Disc"I read Other Comment of similar Problems (particularly with DVDs and PCs)I should have followed the "Does Not work" reviews.Maybe this is Good for Audio CD players (since it has a Follow Audio Instructions an a whole bunch of Info about optimizing the sound stereo system) but it definitely does not work for me.
Our DVD player just stopped in the middle of a disk one day, and suddenly could not detect the disk--or any disk, for that matter. Thought we'd give $10 a try before shelling out for a new player. Sadly, our player wouldn't recognize this disk either, making its cool audio and cleaning features impossible to assess on the current machine.Sounds like it's good if you're experiencing skipping, but if you're player is telling you "Please insert disk" when you already have, this is not the solution for you.
Does a great job cleaning both my car CD player & my 5 disk CD! No more sticking or blank spaces. Also good job on my DVD player
As far as cleaning, I wasn't impressed and that's what I really bought this item for. The portion dedicated to proper set up of your sound system is pretty good. If you have a CD/ DVD player that doesn't get much use and you just want something to run through every now and then, this may work fine, for my truck's CD player, it's not cutting it.
Hi,Hey, don't run to the repair shop just yet and don't kick that DVP/DVR to the curb too soon.......help is on the way!!! My DVR was giving me grief not reading or writing to discs properly until I fed it this Memorex CD/DVD Laser Lens Cleaner. WOW, it worked like magic!!! It's been nearly 3 weeks already and not a single error message and it plays and records like the day I purchased it. If you own a CDP/DVP/DVR a Memorex Laser Lens Cleaner may save you a costly trip to a repair shop......it certainly did in my case!!!
Answer: More than one use.  I have used it x3, and it is still good as new.  Just keep it in the cover and away from bright sun light and heat.