Trying to deter cats.
I have sprayed every evening for three weeks at least, except for two nights when we were gone.  We had 3 cats that kept walking across our porch and last year, sprayed the area and slept on the cushions.  The Cat Mace was able to deter 2 of the cats, however, it does not seem to have phased one of them at all as it visits our porch virtually every night.
Rating: 4 stars