How can I fight Japanese beetles with their natural enemies instead of chemicals?
Most of their natural enemies are in Japan. It takes careful study before introducing them, otherwise they could take over just like the japanese beetles, kudzu, or japanese knotweed. You can buy a grub killer that contains microscopic nematodes that attack them while they are larvae. Most hardware stores sell this. It won’t prevent the grubs that lived at your neighbor’s house from maturing and flying to your house. Chickens are one of the few birds that will eat the nasty things. You can plant a grape vine over your chicken pen. The beetles love the grape vine. All you need to do is kick the trellis, the beetles drop to the ground to avoid danger, the chickens get them. You can also put a bag trap with the bottom cut out over your fish pond.
