Generally, or manly you can say that insects mainly appear at nights .so, for that purpose you may need this insect repellent named HIT.see, this mainly kills 95% of insects by the spray.it is used to be putten in bathroom, basens, to put in the holes, or in the corners of the house.this product is for those people who have taken thier home close to the ground.whereas I know it does not appears in the higher areas.it is very useful for us and unuseful for the insects.from this type of inhalation they die.but, it can be harmful for us .therefore, we should cover our nose while spraying this insect repellent.so, gyzz if you have such type of problem then you may need this repellent you can buy it from medicals.