How often do you need to replace them?
1192951
My first one was a different brand, and it was still working after 5-6 years. I just decided to get these new ones in case they lost effectiveness. I don't think it specifies when to replace them. They have a little dot that flashes all the time. So if they stopped working you would know.
1192952
I haven't had the need to replace any of them, as yet and they've been working for for more than 1 year now. They plug into the wall so there isn't even a need to replace batteries.
719491
I haven't had any degradation, but I suspect that they aren't replaceable. I would expect to replace the whole package if one of those components wore out.
2229294
I think we replace ours every 3-4 months. We watch for wear and tear and any build up in the straws, once we see it we toss them. We use the cups for milk and water only.
540837
Honestly. I'm not 100% sure. Theyre on there pretty good and they work perfect, so I don't see a need to replace.
2179637
I don't see why you couldn't. However, since it is recommended to replace them every three months, I don't know why you would need to...
1002259
From my experience it all depends on how well you clean the nozzle. Some of the guys I work with dont do a very good job so about 30 sprays does the nozzle in. If you clean them well with a brush & some thinner I don't see why you would need to replace them any sooner then let's say 9 months depending on your work flow.
436691
They typically last 6 months. It depends on how much you use it. I change mine every 9 months.
474826
I replace mine about once a month when using the machine. The only reason I can see to replace is that mine get hard water deposits and no longer wick the moisture properly. You may not need to change them as often although eventually they will kind of break down. I am not sure how often the manufacturer recommends replacement. Hope this helps.
1635490
I replaced mine when it was not working anymore. Otherwise if it's cleaned well, you don't need to replace it often or at all.
360310
I've had mine about a year, use them every day for at least 3 or 4 hours. Still perfect.
1881803
they were good for awhile. im thinkin' of replacing them though. not as much give as i'd like.
1035400
I only needed to replace mine at most, once a month. I would say it really depends on if you leave the filter on when you feed your fish. By turning it off during feeding, I could sometimes go 2-3 months before changing it.
1110826
Depends if you purchased New or Old or Refurbished or so.They do last 3-5 years depending on how well they are looked after.
2135743
You don't "replace" them. You take them out, vacuum them, and put them back in. That way, you don't keep shoving out money for replacement parts all the time.
1728119
I have never had to replace them. You should find out the manufacturer and go to their website and either call them or look for replaceable parts. I'm not sure you can even replace them. Wish I had more info.
71333
It's hard to say. My wife hasn't replaced hers since we purchased them in December, but she doesn't do it every night either. Couple of times per week.
1094692
replacement is not an issue. the material they are made of is a soft gel-like material. it will not deteriorate, and is not affected by moisture.i use mine daily.