I need some input from the more knowledgeable amoung you vis-a-vis rat poison. A man from EcoShield Pest Control is going through our neighborhood soliciting business to eradicate ants, spiders, wasps, rats and mice. While this kind of service is not for me, I am concerned for my 2 rat/mice catching cats...and am wondering if my surrounding neighbors employ this service, will it hurt my cats? Suggestions please.