I bought a couple cocoons to combat the evil leaf hoppers and aphids that have grown to ridiculous numbers due to past pest spraying by the condo board. The new board decided, at random, to have the entire area sprayed with pesticide. I never saw any of them so I assume they were all killed off.
This year I will have a discussion with the new condo president about this come spring. I'm going to ask for permission to buy up cocoons and ladybugs. I want to try them instead of spraying.
