This is the second set of toothbrush sanitizers we have purchased. The concept and convenience is great, just wish they lasted longer before they stop working. We are a family of 4 and have one in our bathroom for each of us and one in our travel bag. The only issue is that they don't last very long before they need to be replaced. I was really hoping this was going to be a long term solution, but they lasted only about 6 months before many of them stopped working. This is our second set and we love them when they work.