Bests & Worsts Reviews from Amazon

I purchased 5 of these units. They are all throughout my home (4000 sq. ft.) including my garage. I had a problem with spiders on my lanai. Now from what I understand spiders are not an insect, however they supposedly are attracted to insects for food or drink (whichever). So I figured if I put these around my house then the insects would go away, thereby removing the food source that the spiders had. And, if the spiders had no food source, they would go away. These worked like a charm!! I can go on my lanai now and not have to fight off 2-3 spider webs each morning. I had read a lot on trying to rid a spider situation, but nothing that was convenient enough for me. But came across these...and for the ease of use and the power that they have compared to others on the market, I wanted to try them. I don't hear any noise at all. My cat is not bothered at all. I haven't even seen a bug in my garage! The first couple weeks I did see whatever bug that was in my wall being driven out here and there...but usually dying. But, after that...no more. My home is newly built and I have this supposedly sophisticated in wall pest control system that can be activated to keep pests away...for an activation fee and a monthly payment of course. But, before I accepted a bill, I thought what did I have to lose. It turns out that my $150.00 was very well spent. I'm very happy with this product. And, I would definitely recommend these to anyone who doesn't want someone to have to come to their house every 1-3 months because the chemicals dissipate over time, who doesn't want a bill because you have to pay every time a tech comes, and who doesn't want chemicals put around the house because you have either pets, babies, elderly, or allergies.