Hello, depending on the pest, a specific insecticide will be chosen, and for its application, you will need to take into account the specifications written on the label. An important aspect is that, at the time of the treatments, as well as in the following hours, children and pets must stay away from the treated space. After application, the space will remain closed for a certain period, during which time the solution will take effect. Subsequently, after reentering the house, it is necessary to air it naturally (NOT through the air conditioning system or ventilation devices), to avoid the danger of inhaling the particles left in the air. After treating and airing the location, it is necessary to clean the surfaces with which people or pets will come into direct contact (table, kitchen countertops, floor, etc.). Also, in order to be able to help you with an insecticide recommendation, please tell us exactly what pest you are facing.