It's incredible what effect this means! I have the RAID Night & Day plugged and after less than an hour are lots of mosquitoes fell down from the ceiling! The connector is especially effective when the windows are closed. The only thing that worried me during the product, the possible health consequences. I would really apply only at night and then unplug. The action against houseflies I can not confirm, but against mosquitoes this means is unbeatable. I live by the river and can report a higher than average mosquito visit. After applying ALL Warmest were dead. Recommended!