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've had more than I have had in previous years, but not an onslaught. Still, I'm being vigilant. Each one killed is less next year. Hopefully.

It's a hassle to learn how to post photos, but once you finally get it, it doesn't seem all that hard after all. I still make mistakes and have to fix them; sometimes I don't see it right away. The hardest part for me was to understand how the sequence worked to get from my computer and show up in a post. I think it is the same for a lot of people. Once you can grasp that and how html works behind the scenes on websites, it makes more sense. html means hyper text markup language. That made no sense. Basically the code instructs the interpreter or "translater" on the server how to display everything on a web page but is not meant to actually be seen on the web page. It gets hugely complex and more kinds of code, and I can only do a little of it without looking it up somewhere and fighting with it. In your browser sometime, look at view>source, and you will see what it takes to format a web page on a complex web site such as this. Sometimes I find the code I need by doing that, and sometimes I have to figure it out another way. There's a forum around here to practice, but if you decide to try it, just keep hitting preview until you see your photo. I still have to do that before I hit submit. If you can't get it right away, don't feel bad, just scrap your post or take the photo code out and keep trying.

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