I have heard that Japanese beetles do go thru a cycle and that the population will diminish at some time. I live in Wisconsin and so far have had a material reduction in beetles without adding any chemical etc to make that happen. Wondering how others beetle populations are doing this year. It would be great if they don’t come back for a long time!
Saw my first and only Japanese Beetle, so far, yesterday. Three weeks later than previous years. So something is different, perhaps our deep cold, -20F with no snow cover had a positive effect.