how long do these last? when do you know it is no longer working? can you clean them?
1621937
I bought two and they both lasted about 2 months before they started making a really annoying electronic clicking sound. It could have still been working but the noise wasn't worth it. As for cleaning, the only thing the instructions say you can do is wipe off the front of the unit, so nothing helpful there. I wouldn't buy this one again.
1378307
I've had mine for almost half a year and although there is no need to dishwash them as they wash very easily, I do dishwash them to sanitize them and I've had no issues.
1896218
Just cleaned mine today. Just wash in soapy water, rinse, and dry. Be careful not to break them.
2205530
They can be cleaned. You can take the black plastic piece with the holes off and clean that gunk out. I do use soft water in it. I used hard water for a short time and that will drastically change how long it will last. I put the whole thing in my dishwasher. Even the filter and pump. I just don't do the plug in piece but the wire - yes. Just make sure it's dry obviously before plugging back in.
2080384
To the best of my knowledge, they cannot be washed. We've had ours for about 6 mos., and are about to consider changing. If your don't have a real serious dust problem, I'd say 6-7 months would be about the life of this filter.
2195608
I've had mine for months and there is very little wear. They can be hard to clean after a while though, the dead skin accumulates in the little holes.
769894
I just cleaned it with a handheld vac, but I think they need to be replaced every six months, haven't had it that long, but it's doing what we wanted it to do.
1849010
I've had it a little less than a year, and it's still working great. You can have it for a long time as long as you clean it after each use. I use a toothbrush with a bit of dish washing liquid. Let it dry before putting it away. You're good to go until the next time.
676336
Not sure what you mean by "stopped working" since there are no moving parts, but I have two that I rotate and a spare. I remove the dirty one, put in the clean one, rinse out the dirty one, put it in the closet when dry, repeat in two weeks. We have a dog so we vacuum daily and the two have lasted well over two years with gentle rinsing and I have the new spare for when one eventually does wear out. However, so far they appear to have at least another year of life left in them.
356887
I use this device a lot in my cleaning business so they only last about 2 to 3 weeks. I would guess several months with normal household use.
1231332
i have been using mine for a couple months... they are little stained but stilll very usuable.
957392
I suppose It depends on the amount of usage. But I have had mine since November 13. Used moderately but not heavily. A couple times a week for 30 min to 1 hour each time. I like them. If I could afford the $40 a piece ones I would get those over these any day. But for the money they do what I need them to so and so far no sign of wear.
875120
yes - in fact i'm thinking of buying some new ones - I have used them for about 3 yrs and they're getting kind of dirty inside and i'm sure if i wash them - all the labeling will come off. Figure for the price, they've lasted a long time.
882184
I've had mine since Oct 2013 and they are still fine. They're sealed in a foil pack like hand wipes so they should last a very long time before they dry out. I'd guess indefinitely. Are you just using them on glasses? I bought them primarily for quick clean up of camera lenses, but we use them on regular eyeglasses, smartphone screens and laptop/monitor screens as well.
1390286
They last pretty long. Make sure you use quality batteries, like Duracell or Energizer. Don't forget to turn them off when not in use. I don't want to attempt to guesstimate how many hours, but we really don't have to change them often. If they start making funny noises, time to change batteries.
1539305
As long as you cleean them properly they last. I have had mine for 2 years, just brought em out last week for a project and works great. Just be sure to properly disassemble and clean them and thes are a fine investment
298891
How long have you had them? I've not noticed any residue but I've only a month or two.