I have used good knight repellent for my home last five years, simply effective compare with other repellent.
Machine have easily adjustable with small and speed mode, if you have adjust based on the mosquito level.
Smell also not problematic one compare other repellent odour.
I do not know this is environmentally effective for human health, but safe from mosquito.
Main problem is easily dischargeable when machine put in speed mode.other wise it is definitely value for money.
If u wish, please buy liquidator with free machine.definitely satisfy you and releive from mosquito bite.
