1. Is there any way to neutralize cat poop? Our cats have a nasty habit of pooing in our potted plants and unfortunately it looks like we've already lost Abiu and Cashew trees due to this habit. 2. And how would you go about removing/preventing certain caterpillars? All of a sudden my Passion fruit vines were eaten to death by a herd of smallish (1" or so) red caterpillars with sharp black pokey apparatuses.