I have problems each summer with them. I get 100s on my plants none ediible plants all flowers.They will strip a 7 foot rose bush of leaves, flowers and buds in a couple of days! I spray weekly with a Japnese beetle spray. that does the job.There are sprays that you can use on fruits also. If you have a bad infestion then daily picking them off won't do the trick.. Milky Spore
Milky Spore Powder for Japanese Beetle Grub Control in Lawns & Gardens at Home Harvest Garden Supply can be used to treat your lawn that does work for the grubs its expensive..
They are such a pretty beetle emerald green like the jewel color but dam they sure can chow down on a garden.. And don't use the beetle traps!!!!! That just attracts swarms of them. I can't see nets working unless it was very fine netting..