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AuburnTigah
(68.11.169.174) on 6/23/2005 - 10:54 p.m. says: ( 7 views
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"Acephate is probably what you have been spraying.."
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and to be honest it only pisses them off. Definitely do not use the traps, they are expensive and only hold a few hundred of them but they attract thousands. They have a pheromone that mimics that of a "virgin female beetle" so you end up with thousands of......."frat boy" japanese beetles roaming your yard. The most effective control that I have found is an insecticide called Talstar. You can buy it online probably a lot cheaper than you can anywhere you are locally. Go to google and type in "talstar-one" or "bifenthren" and you will probably get a bunch of "do it yourself pest control" sites. You are probably going to pay about $50 or so for a pint of it but it will go a long way. Bifenthren and Talstar are the same thing....one is just the common name (bifenthren) and the other is the trade name. (All chemicals have a common name and a trade name.......Roundup is a trade name and its common name is glyphosate).
Anyway, Talstar One will knock the crap out of the adult japanese beetles and then what you will want to do after they have pretty much gone is around late July or August spray your lawn with one more application and it will kill the beetle grubs that are growing underground for next year. This will significantly reduce the number you have to deal with next year.....although some will probably still fly in from neighbors yards and elsewhere.
The reason I like Talstar is because it is extremely effective and kills them quickly and at the same time has a long residual (a month or two give or take a week) so it sticks around and keeps killing them. Acephate loses its effectiveness about an afternoon...what effectiveness it has anyway.
One more thing and this goes for all pesticides....only mix what you are going to spray that day. Don't mix up a big batch and expect that you can just keep using the sprayer over a course of a couple of weeks. The pH of water that comes out of most municipal facilities is fairly alkaline while the pH of most pesticides is fairly acid. If the chemical sits in water over an extended period of time without being sprayed then the two kind of neutralize each other and you get left with.....well, lets just say you might as well be spraying everything with water.
Hope this helps
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