You can use Pro-Pell Rodent Repel if you have pets. We just recommend keeping pets out of the area until the spray is dry so that your animals do not get the product on them and potentially carry the odors inside your home.
Since Pro-Pell Rodent Repellent is a liquid concentrate that is diluted with water and sprayed, we do not recommend spraying it on or around car engines or similar equipment. You can consult with the manufacturer at 888-401-3134 to see if they feel this is a safe method of application. You could, however, spray this around a parking area or around the outside of a garage to repel rodents from these areas. We recommend using mouse snap traps or rat snap traps on and next to the tires of parked vehicles to help control rodents in these areas.
Pro - Pell Rodent Repellent should be mixed at the rate of12 oz of concentrate with 1 gallon of water.