I bought 4 sets and was wondering how long they last after opened?
1261823
I used my second one about 6-8 months after the first one and it still worked...
1261824
I think it would take at least 4 months but I think it is better to open for a period of two months once you open it.
1261825
I opened 2 at a time and put them within 5 feet of each other. Looked every day and more and more would get stuck. Only replaced them after about 5 weeks. Never thought I would get rid of these pests but can honestly and happily say I haven't seen 1 in 2 months. Think they are all gone. I used 5 in total but 4 is probably enough as long as you clean out your cabinets of wheat type boxed goods. Good luck.
1407601
As packaged they should last awile. If you open it to see what's in it, you might want to put it in the freezer. I'm extremely satisfied with my purchase and would recommend it to anyone.
1469265
We have only used them about four times. So far no problems. We have friends with more expensive sets and I don't see much of a difference. We are novices...so I'm no expert but the set seems worth the money
2113414
Hard to say, depends on when you buy them. I'd ask the company how long they keep for, but I don't think you'll have a problem with them sitting around going bad. They're too addictive.
400907
I have never read anywhere how long they last. I am sure if you take care of them they will last a long time.
93758
I have 4 pair that I rotate through. I have had them for a few months and there is still a lot of life left in them.
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.
914672
They can last for several months if unopened. Longer if refrigerated prior to opening.
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
1942062
Price is right, so far so good.Just use the first set, don't know how long it last?
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...
547425
Mine says "Use by 8/12/14" They are vacuum packed so I think you would be safe in buying a 4 pack.
432565
This would be a question for the Seller (Amazon or whomever you purchase from).. I am just a consumer. I will say that the exp date on mine is out far enough for me that there isn't any chance they will reach expiration before I use them all.. (About 2 years).
166345
They don't have a marked expiration date. I buy a set ahead and store them for several months without problems. I take 6 to 8 months to use up a set and don't know that I've had any failures. I'm not sure how they would do if you store them for years.
723171
They are designed to last approximately 30-45 days. However, I have seen customers that have gotten much more time out of them. An average usage time would be about 2 months.
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.
448908
I keep them at my cottage and have only used them about 4 times. Ok, so far.