Does a "bug zapper" execute June bugs and Japanese beetle? I am thinking of putting a "Bug Zapper" in our back courtyard...

I am thinking of putting a "Bug Zapper" in our back courtyard because every morning I have to clean out close to or more than 50 June bugs and Japanese beetle from our pool ( we are currently trying to find a cover big enough to cover the pool at night but so far every place we be in motion is "SOLD OUT". People have told me to buy those bettle traps but I've also heard the attract more. Any philosophy would help. Thanks
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Answers:    beetle traps are a joke!.abominate to say it,but til you get a cover you're sunk!!..I don't cogitate a little sign "no lifeguard on duty" will work either! accurate luck! oh, wait.go to the local hardware store, possibly your "official" pool covers are sold out, BUT there are some terribly voluminous tarps for sale out there...dont know how big your pool is, but if you can find the really ample tarps, you can cover it with that til your pool covers show up again.
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Learn to swim with and soak up the beetles.