How long will they last ?
1862466
These are plugged into your household 100 V wall electrical outlet. The relay closes about every 10 seconds for about a second sending out the ultrasonic sound wave. I have had these for close to a year and they have not failed . Like any electronic device they will eventually fail but that should take many years. They have a warrannty and the compamy has been around for a very long time so they are not some fly by night establishment. They have not worked on Ants though. Everything else ( other pests and vermin) seems to stay away.
1862467
I have only had this brand since Oct 2013, but the one they replaced (Sunbeam brand) lasted over ten years! I hope this helps?
1862468
Depends...I purchased a pack of four and one of the two that I took out of the package doesn't flash the red light indicating that it is working. The other one that I placed in my kitchen is flashing, but, I don't believe it eliminated our mice issue (the poison did), nor did it eliminate spiders.
1862469
No idea. We had ours in & although we saw a reduction in roaches, it was maybe 2 weeks before they were back out & about even crawling right on the repeller.
372033
They last about a year. I have been buying them for about five years and Amazon has the best prices. I think you will be happy with them. Hope this helped.
2196390
Not sure, I have only had mine for a short time but they are designed well and seem like they would last a long time with proper usage.
333015
They last a long time, I have some from a year ago. Of course one or two of them may not last, but over all they are good.
197355
I can't answer for sure, but I bought mine in March 2013 and they are still as good today, 4 months later. So, at least that long. :)
417654
don't know. When I buy them they are usually good for 6 to 12 months or longer.
2089070
They should last you about three months. I am just now replacing the black and the color is still at 70%. But I would say they are on the minimal side.
1414289
I read somewhere that these are suppose to last for up to a year. Just make sure you keep them stored somewhere cool.
2077973
If you're asking how long it will last, I would say for about 3-4 months maybe even longer!
162791
Hard to say how long they will last as that depends on the surface of the floor (the smoother the longer they will last, the rougher, the quicker they will wear, think of sand paper wearing them down). Ours are 6 months old on stools used at a kitchen island on a new smooth hardwood floor, so slid multiple times per day and so far they look almost as good as new, with slight crushing, but that would be expected with felt from day one when it gets compressed the first time. For the price, and how they are holding up so far I would recommend them. Take it for what it is worth, but I am an electrical engineer who works with electrical and non-electrical consumer products. Hard to say how long they will last as that depends on the surface of the floor (the smoother the longer they will last, the rougher, the quicker they will wear, think of sand paper wearing them down). Ours are 6 months old on stools used at a kitchen island on a new smooth hardwood floor, so slid multiple times per day and so far they look almost as good as new, with slight crushing, but that would be expected with felt from day one when it gets compressed the first time. For the price, and how they are holding up so far I would recommend them. Take it for what it is worth, but I am an... » Read More Hard to say how long they will last as that depends on the surface of the floor (the smoother the longer they will last, the rougher, the quicker they will wear, think of sand paper wearing them down). Ours are 6 months old on stools used at a kitchen island on a new smooth hardwood floor, so slid multiple times per day and so far they look almost as good as new, with slight crushing, but that would be expected with felt from day one when it gets compressed the first time. For the price, and how they are holding up so far I would recommend them. Take it for what it is worth, but I am an electrical engineer who works with electrical and non-electrical consumer products. « Show Less
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.
2258153
Think they are good for a year. 10 days after opening. I really think they would be ok longer than a year.
458365
Mine lasted about five years, but they went bad because I accidentally stepped on the wire and pulled really hard, if you take good care of them they should last at least ten years imo.
354437
I believe they don't have an expiration on them. They seem to last forever.
1984939
They will last a very long time.I store them in a tin with a top that is frequently left off.
1510909
They last ok.. Like 4-5 hours.. I mean they were literally $1 each-) so the quality matches the price-)
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.