How soon should the Mega-Catch Mosquito Trap begin to kill mosquitoes? While the Mega-Catch mosquito trap will begin to catch immediately there is any mosquito activity in the vicinity, it may take as much as 6-8 weeks of use to reduce local populations to the point that breeding cycles are interrupted. Subsequent re-infestations will occur after rain. Will the Trap get rid of all mosquitoes in the area? No. There is no single silver bullet to get rid of mosquitoes. The best you can do is devise an effective mosquito control plan for your area using the best available control strategies including one or more Mega-Catch Mosquito Traps. How often do I need to operate my Mega-Catch Mosquito Trap? Before you commence using your Mega-Catch Mosquito Trap note the time of day when mosquito activity is greatest. If, for example, this is in the morning and the evening then you should set the trap to operate at these times. Where your mosquito problem involves night time biters, we recommend operation of the trap between 7pm and 11pm and 4am and 8am. If mosquito activity is all day then you may need to operate the trap 24 hours per day until the mosquito population declines. Ultra and Premier XC Traps have a programmable timer built into the menu. However, a plug in timer (available from hardware stores) will be required for Premier and Alpha traps. Is the Trap harmful to me or my pets? No, Mega-Catch Mosquito Traps are perfectly safe for outside use around humans and pets provided it is operated in accordance with the instructions in the operation manual.