Safety is a very important factor that must be considered before purchasing any type of mosquito killer. This is because not all models are safe for people and pets. Some of them contain harmful chemicals. Even the usual mosquito spray can be dangerous, as it can cause an allergy in some people.
Also, please be very careful when using mosquito insecticide and bits. They are extremely dangerous when swallowed. Make sure that you store them in a place unreachable for children and pets.