No se si funciona realmente

So far no rats in my car engine ... I have a Subaru, Toyota and Mitsubishi - put them in each vehicle - my neighbors with a Subaru and Mercedes have gotten rat nests and chewed wire harnesses - consider this as an inexpensive preventative measure.

Not sure if this will chase the mice away but it does light up etc,we shall see

easy to install and very useful.

So far so good

Used after a mouse invasion in daughters car. It was quite a surprise for her mechanic .

No sound all time and you don't now if it work.

After the first test, lights went off and seemed silent. So far no critters under hood

I gave it four stars because there was a red marker mark on one of the banners didn't want to do a return return because I need it now and just hoping no one notices it while it hangs outside of my front door.

I have not used this item under the hood of my car but rather in the garage to keep the little field mice out. works well.Don Haas