I offer a cheap device to fight with mosquitoes.

The device will have the special shape like a tube. There will be the special smell which will attract mosquitoes. Then mosquitoes will fly into the tube. There is an electrical spiral inside the tube. When mosquitoes fly into the tube they will burn down.

The only disadvantage of a new device is bad burnt smell. But you can get rid of bad smell very often. You should just wash the tube and ventilate your room.

I hope you will like my invention.