Name: Glen Ingram Macleay Is, Qld, Australia (Zone 12a) (Lee Reinke X Rose F Kennedy) X Unk
Pam, yes, you can definitely make an impact in your own yard. It may be a continuing thing, alas, because they are most likely breeding and recruiting to you from areas outside your yard. Here our problem is the Cane Toad introduced from Hawai'i (where they were introduced from South America). We have a product now on the market here that is considered to be humane. I believe it will also work on Cuban Tree frogs: HopStop.