How long do they last?
1664615
Hey John, One bottle lasts about 30 days. If you have a multiple cat family it sure helps! I love this stuff! Keeps my cats a lot calmer then without it.
1664616
When plugged in just about a month ... i use it to cover a small room but lots of open windows during the day.
1664617
There is a little variation with some but, on average, I would say about three weeks. I've used them for about a year in two separate locations in the house. Hope this helps.
1664618
I don't know exactly but generally a month maybe a little more. I can tell you that they have worked very well for my cat. he is Siamese and Bengal mix and very high strung. I find he is much more comfortable with this product in the house. it is worth the money.
1664619
Hi John, if you keep them plugged in continually (which is what I would recommend for full effectiveness) then each bottle lasts about a month. I actually have a reminder in my calendar to change them out. I forgot once at the end of a month and paid the price a week later. :)
71929
If kept in a cool, humid free area they can last for years. If I remember correctly I'm thinking 10 years +/- a year or two.
1409556
If you use them properly they last about 30 days. I'm not sure how many you have around your house, but they last about 30 days once they are opened. And the "use by date" is out far enough for you to be able to use them in time.
2228599
They last quite a long time. I have had mine for over a year now. But it also depends upon how frequently and for how long of a duration you use it for. I only use mine on rainy / grey days and for 2-3 hours at a time.
1292882
I've only had mine for about 2 months, so I can't speak for how long they last. Fortunately, no issues thus far with them.
2046117
They seem to last a long time, I bought the 4-pack two months ago and I'm still using the first one. I really don't use them a lot, tho, only when I open up my pc case.
588250
They last quite awhile actually. I change mine out weekly, even though I never see more than minor wear on them.
291369
I had mine for 2 years. They come back year after year. A friend of mine has had them for years.
351616
Not enough time put into using them to tell just yet, but they have lasted just fine for the amount of time I have used them. Which for reference is maybe 40 or so hours since I got them a few months ago.TL;DR They seem pretty reliable so far.
354437
I believe they don't have an expiration on them. They seem to last forever.
2259949
At least a few months. I use them too quickly to find out, but I used a leftover box after about three months and they were good as new.
1439395
Mine have lasted for over 2 years and still work. After they get older than that they do not last as long and get hard in the package. I always have some left year to year because I cannot always find them when I need them.
953543
MIne are lasting quite a long time. Sseveral years and on for as much as 12 hrs per day.
2106382
I only purchased them about 6 months ago so I cannot tell how long they will last. I highly recommend them because they work great and is very well made.
1111056
I would say a few weeks, depending where you put them. If you have them in a rather air-tight container, they last a very long time...if there is air exchange, they obviously won't last as long. I like them a lot but I did have one go bad on me...when I was re-charging...for some odd reason, the balls turned black...rendering that one useless...the others that were in the same condition and were heated for the same time did just fine...
272877
They last quite a long time, actually. I use NiMH rechargeables, and it's usually several months between recharges.
1900779
they last pretty long for me. It really depends on the type of item your using these batteries for. But for me they always last at least 5 hours. Theyre pretty reliable for me. They also take like a day to fully recharge for me, i go to sleep & when i wake up their fully charged.