I think its working...I can hear the frequency, but it is not so bad. It also has other frequencies in case the other one doesnt work. And what was really cool was as soon as I turned it on my dog started barking...lol
Nice It actually works. Gave 5 twinkling ones. Thanks.
It works well It hurts my head though, then makes my ears ring once I turn it off
14-2-2014- support years Naughty mosquito...
It works... It works and doesn't use too much battery like others I've tried