What is the proper frequency to repell mosquito ?

Question

20 khz or higher ? Sine wave or square wave or others? I want to design one but I need to know the frequency. Or just using an audio signal generator is good enough ? How many watts audio power is required to cover an area or 900 square feet?

Answer 1

15.92 Khz, sine wave.

900 square feet...good luck.

Answer 2

I always thought that those electronic insect repellers were useless but my parents bought one and swore that it was working. When I had a spider problem (nasty buggers here in Australia) I bought one.

One evening I watched a large spider just sit on the transducer for over four hours. He was there so long that I took photos. I'd say that this is evidence that these devices actually attract insects (arachnids at least) with no real evidence that insects are repelled.

Answer 3

you have to use > 20kHz inorder not to bother human, also use 100 db to infect pain. small insect like grasshopper ultrasound hearing is 20 - 50KHz, moth 20 - 240KHz

kansas state university entomology dept had tried repel mosquitoes using 20 - 100KHz 100db unsuccessful. perhaps they should use 100 - 240 KHz because this range will repel moth. the smaller the size of insect the higher frequency reqd.

small flying insect like flies, mosquitoes have poor eye sight in the dark. they are attracted by ultraviolet light. perhaps you should attract them with fluorescent light then zapped them with static high voltage.

Answer 4

Anything above 25kHz

Square or sine.

Use a tweeter, a 10W is fine.