There are some organic products people use, but from what I've read, they repel and do not kill. If you do not kill them, they will burrow in your lawn, lay eggs, and multiply. One female can create 60 beetles per season. So you need to treat for grubs as well. Milky Spore may or may not work in my zone and is expensive. I'm going to try to get some Grub-X down but don't like killing earthworms. One product is Bye Bye Beetles, used by a rose grower in the southeast and recommended, an organic and repellant. See link. I may try it at some point, but didn't want to wait while it shipped and can't remember the cost. Saw my first one June 21 which was early, picked a few off and squished, started the soapy water thing. Then I cut back all my repeat blooming roses and am watching the rest of it. Haven't seen any since but that is not to say they will not find my echinacea, cherry trees, rose leaves, pussywillow or preference du jour. If too many come back, I will spray with Sevin. My primary reservation was bees, but if there are no flowers to attract bees, there's not much chance of harming them if I spray early am or late pm while they're out. My cat heaven knows what he gets his paws into roaming around, everyone treats their lawn, and I did for the first time this year in quite a few years, just got too awful, hated to do it, and nowhere near got it all, but much better. Some people cover their roses with nylon net and cut off the blooms which are the main attractant. Hated to sacrifice the blooms but won't use anything with imidacloprid because it kills bees, saw it myself, and has residual action. Also Sevin won't protect newly-opened buds. Pyrethrin knocks them dead (in time), think it's an organic, but doesn't last as long as Sevin. Then there are several home remedies involving concoctions I found recipes for on the web by googling, said to test on a small area first. Some of the ingredients are chili peppers, garlic, dishwashing liquid, lemon juice, vinegar, not all in the same recipe. A lot of rose people use Merit which you pour on the ground, must be done earlier and is a systemic, but if I'm not mistaken, it contains imidacloprid, bees again and other beneficial insects, does not discriminate. Good luck. My roses don't do a whole lot except two so let the perennials provide the color, didn't want to go through what I did last year again, in the hottest days, ruined that whole part of summer stewing about the dratted things. The only hopeful thing on the horizon is that some are reporting seeing some with eggs on their thoraxes? (white spots) and may or may not kill those. Those are laid by a parasitic wasp that destroys them when they hatch. But the gol darn things will mate first for sure as they do it sporadically before they die. I haven't seen any like that. There is also an ongoing experiment at the U of Michigan which involves innoculating adult beetles which will spread a killer virus from one to another, have been given to a few gardeners to test, but if it is safe, who knows how long before the rest of us get access to that? There are no known predators, some say ducks, maybe turkeys, chickens may or may not eat them but can't possibly get them all. No bird I know will eat them. Praying Mantises will, but it would take thousands to make a dent in bad outbreaks where they can number in the thousands and millions. That sums up what I've found so far. Hope it's helpful. Here is a link that might be useful: Peter Beales Organic Plant Health

I found three last week and removed them. There was one yesterday and I just knocked him onto the ground!

I got freaked out when I read this. When I looked them up phew we dont have them (knock on wood) Found this site that has some suggestions and safe recipes. Sounds like getting them before they turn into adults is the best way to control them Goodluck! http://www.buzzle.com/articles/japanese-beetle-control-how-to-get-rid-of-japanese-beetles.html

I see a few Japanese Beetles on the roses. I have been absent from the garden so I probably have a lot more, just not getting in there and seeing to what extent. I noticed them on a rose near the front walk on my way by. I don't usually get a high population of them. I hope to get out there and get rid of them before I end up with one. Yes, each year it's a different combination of critters. I usually get a lot of damage from earwigs during the night. This year I've barely seen any damage from ear wigs. It was quite a significant difference, especially to my basil and echinacea. Last year they were awful and this year I can actually enjoy them. I wondered if that crazy winter with all the snow cover had something to do with it. I can't imagine what other reason would have made such a change. I haven't been keeping up with the RLLBeetle this year either and I noticed going past a Lily the other day the foliage is not looking so good. But I'm not worrying about it. I think whatever year I have time to pay attention to it, I can get it under control. I was reading an article in the Globe from the Sunday paper about a gardener that was not keeping up with her garden this year and how it was doing better without her interventions then it usually did with it. That gave me a good laugh. I think it is just a better gardening year then usual. Next year will be different again.