I have recently purchased samurai insect trapper and it works great. I caught 2 flies as I was hanging the tape up! I only noticed maybe 4 flies flying around my kitchen, but the next day I had a good 30 on the tape! A couple more show up on the tape everyday, but I haven’t seen a live fly since the day I put it up! Something about it just attracts them instantly. They work great indoors and out.