Ineffective Product

Bought Mortein multi insect killer at dischem, got home and spray locked the door and went out for two hours. When I returned there was not even one mosquito on the floor or any insect for that matter. Only the smell of the product which doesn't seem to kill anything. I bought two cans gave my mom one and same thing happened to her I can only conclude that their product doesn't work. At this point we can call it a **** because why buy a product just to have to go back to get a different product spending more money trying to achieve the same objective.