I can hear the sounds maybe because I can her high pitched sounds! had mouse driving me crazy could hear it but couldnt run it out! turned it in sat on table and just couple minutes looked down and it run out across my foot! this being after I first spent hour trying everything to run it out moving table pulling out draws etc! and I also used it on puppy in kennel barking like crazy and he shut up then just whimpered! have to say worked great for me and we finally got some sleep!! Thank you for the App!!