This bug zapper is so quiet that I have forgotten that it’s even here. With the nice Spring weather comes bugs. Lots and lots of bugs! I plugged this bug zapper out on the patio so that we could enjoy an evening outside without getting eaten alive by mosquitos. You can hear a little bzzzz when a bug gets zapped, but its not really loud or too distracting. The instructions say to not to leave it outside so I have just been bringing it into the garage when we come inside.***Edit: I just added a pic. This is after 30 minutes of sitting outside. It kind of stinks, but I don’t even care.