After using for a while, the foam tip starts ...
583817
After using for a while, the foam tip starts to drag when swiping or have to apply too much pressure when tapping key board.
Question: Can you wipe tip off with wet cloth?
795746
a film started growing on the airline tubing, and then foam appeared in my tank. The tubing was the only thing I added to the tank at the time. I did several full water changes, but the foam always remained. When I removed the tubing, the foam went away.
113808
This product looks nice and worked well for a couple of months. Then one day I heard a little "pop" as I used it, and now it no longer dispenses foam, but watery bubbles. I have used the same detergent all along. This did not happen right after a refilling.

Also, the head takes too long to snap back up, so when I need more than one squirt at a time, I have to push it back up myself. I think that is not the intended function, so I think the spring is set too loose. (This issue was present from the beginning, even before it stopped dispensing foam.)
3408065
I liked this foam roller at first as it worked just like any other roller should! After a month of heavy use, it became softer and less firm.
3350789
Initially I liked this product. Worked well for on squat bar. However, after only 6 months of once a week use the foam separated at the contact point within the pad, rendering it basically useless. I make do now by rotating the pad so the area of the broken foam is not on my back. Very annoying. Would not recommend.
3266984
Even after adjusting the foam, it still wasn't every comfortable. And if you have a sensitive noise. The smell of the foam lasts a long time.
4344476
It was great when I first started using it, but after a couple of times the tip wasn't as sharp and didn't work very well.
4919195
The foam ear tips allow extended time use. Great for listening to binaural music tracks while falling asleep. Other products with silicone tips will cause pain and tenderness in ear venal after a couple of hours. Good sound and noise isolation. Decent quality. Works well with android phones to control music play  and take calls.
1408972
leave a smooth finish but won,t hold up to Awlgrip linear polyurethane paint 5-10 minutes and the foam separates from center sleeve
2258883
The original foam sleeves that came with my Shure SE420 lasted a couple years for each set! I washed them periodically and used said 'phones/buds almost daily during jogs, workouts, gaming, etc. Several sets of foam buds came with the original purchase but now 7 years later I needed replacements. The expand time required for full expansion took like 20 seconds for years and they lasted a LONG time between sets. However, I will say that I could tell right off that the quality of these replacements are different than those that came with my buds. I have already had to replace one of the replacement sets as after 4 months of use and 1 wash they lost the 'memory foam' characteristic and became a foam puff that when squeezed it only took 1 second for them to fully expand; this causes too much pressure in my inner-ear causing pain and discomfort after a short while of use plus I would easily loose the 'seal' and lose sound quality. I do like the inclusion of the plastic grill to keep debris from entering the sound tube which makes cleaning MUCH easier! I still find these to be happy replacements that work fairly well to those that came with my bud purchase but just wanted to state my experience - yours may be different.

UPDATE:

For clarification, these are very comfortable and work well -just don't wash them as they are not as durable as the old foam sleeves.
1888812
The glue used to adhere the foam tips does not work well at all! They will all fall off if you don't glue them down again.
1191357
These were incredible when I first got them. I used them as replacements on my MEE headphones. I wanted to block out the sound of others in my office and they did a great job at it... for about a month. After that, I noticed the tips were getting thinner and thinner every time I pulled them out of my ears. It was like the memory foam wasn't expanding back out. I also noticed the noise insulation slowly going away. I could start to hear my coworkers talking over my music. Finally, after about 5 months, chunks of foam started to fall off the tips and I had to throw them away.

I know there are multiple pairs in a pack, but I have multiple pairs of headphones so I don't have replacements for the ones that fell apart. I will be looking elsewhere for a new pair.
1948635
After some use the rubber end pushes in and becomes harder to use- fine for short term use
534569
We installed this product in all of our gutters  about 2 years ago. It is easy to install, and works as advertised.

My problem is that I am now noticing the foam is breaking down. the top inch or so is very fragile and brittle, and breaks apart when pinched. I will be seeking a refund.
2579964
Update: Stopped working after couple weeks of use. Loved frother while it was working but I cannot recommend it. Battery compartment is NOT well made. This frother made very thick foam while is was working. I would buy it again later if they get problems fixed.
2000572
Not terrible, but it's foam, so it starts to get indentions where you keep your feet. Could only use it for a few months before it lost the support/height that I needed.
1653022
I use these a lot in my woodworking for quick finishing w/o cleanup. It's a love hate relationship because I love the convenience but I do struggle with with the foam breaking up on any of my rustic, rough surfaces and also with overly flexible tips because I think they're simply too long. Sometimes foam works best and sometimes disposable brushes.

I will continue to buy them.

UPDATE 10/2016 - I was running out and was at Woodcraft so I picked up more expensive foam brushes. Dang it! They are MUCH nicer than these, being made from denser foam. I hadn't realized that before. So now I've bought two packs of those brushes. Thees brushes are more subject to tearing and having pieces break off when I'm working on rustic furniture.