We found the same thing with the bounce dryer sheets.It did use to work,but the mice have either gotten used to it,or they took something out of the bounce.They used it in a car of mine and a friends to make nests with.We wound up with perfumed mouse pee.None of the electronic repellers have ever worked for me either.Poison has always worked the best,and last year I went to a Ratzapper type of trap.Nobody had them locally,but one hardware store had one along the same lines made by Victor.It costs $27.and I have gotten over 60 mice on the same set of batteries.The only problems I have had were minor.One is that the end where you smear the peanut butter has little holes to let the aroma out.So,instead of going around the other end to the door they reach their little hands in and eat all the peanut butter they can reach through the holes.Only after that do they explore for another way in.They do that by the second night.Also,in a hot environment the plastic case will warp.There is a little safety on the lid so you can't shock yourself with the lid open when putting in bait.The heat warps the lid just enough to keep that safety disengaged.You have to bypass that safety.If you forget to turn it off before putting your fingers inside to bait it you will not forget again.Think grabbing a plug wire with HEI.The best part is no dead livestock in the cowl,under the seats,in the headliner,and no blood and guts to shake out of a regular trap.You shake the trap over a rubbish can and you are done.