The smell of the liquid is nauseating for us, the smell gives headache. Even after plugging ALL OUT MACHINE the mosquitos keep flying around the machine and even bite us. We have noticed that many times the mosquito standing on the top of the liquidator it states that it is totally ineffective and doesn't kill mosquitos. The Mosquito repellent doesn't last for long because the refill pack evaporates very fast. Doesn't even last for a week. I will suggest you if you want to burn your money than only buy it otherwise it is a useless product which is ineffective. Thank you Hope you like the review.