...my daughter reliably informs me hat you need to be up rather late between 10pm and 1am ( or you can change the time)...in summertime, june, july august...you have the volume on and you can hear them scuttling accrose floor you need to be VERY quick and you have to use a net wich you can purchace for 500..... I think that's the gist of what she said anyway...it's like double dutch to me....