I don't see it, either. Our house is very open and in the Caribbean. Just this morning a tree boa lounged in the breakfast nook. The answer to your question is cats. Cats keep the wildlife population down. We also encourage snakes as none on our island are poisonous and they eat rats, mice and big bugs like mahogany birds. The only problem is teaching the cats to leave the snakes alone.

You are probably wondering how it is that people can stand living with all those critters, but the other side of the coin is those of us who live in open tropical homes and wonder how others can live in sealed houses. When my family travels, we open windows; even in winter.