Unfortunately, I can not understand the enthusiasm of so far only 2 reviewers: That with the "numbness" of white cats I thought was a joke ... At least in our neighbor's cat seems to be true but fully; because she came running and has some very interesting sniffing (blue LED on was in the top third frequency and sensor full blast). Then she turned away bored and is (slowly !!) left ... Pay me now have to leave unfortunately occur other measures.