Can you please make dragonfly sound inaudible?

I tried this on with the three different sound settings.
I think the dragonfly sound is the most effective, but I hate the ticking sound.
Can you developer please make the dragonfly sound inaudible like the rest of the sounds?
Ill raise my rating if you do this in your update. Click yes if you agree!!!

ibeliever about Anti Mosquito Plus Sonic Insect Repeller