I purchased four Riddex power plus units from a Email advertisement which claims that the units will cause rodents to flee from your home along with unwanted insects, this is a scam, it does absolutely nothing. For the two weeks I used the unit I caught no less then four mice in a mouse trap no further then four feet from a unit plugged into a electric outlet, I switch the units around with the hopes that it may have been a faulty unit, this did not work either I kept catching mice by traps.
Sitting on one of the units for at least two hours was a big black ugly spider that seemed to be enjoying the unit.
When you try to get a refund for this bogus product there is no address or phone number to reach except for a company called "Global TV Concepts Inc in Deerfield Beach Fla, I wrote a letter to The Attorney Generals office of Florida with my complaint and received nothing in return not even an acknowledgment that they received my complaint. So if any one is looking to buy one of those units don't, it's a rip off