Safer's Critter Ridder ready-to-use animal repellent is an effective dual-action spray that uses ingredients such as dried blood, putrescent egg, and garlic to create an unpleasant environment. It repels by irritating the animal's sense of smell and taste so they seek food and shelter elsewhere. For your convenience, critter ridder is also easy to use. Simply point the bottle in the designated area, and spray! The formula repels cats, dogs, skunks, and more. The 940 ml bottle covers up to 29.7 m for up to 30 days, leaving more time for you to enjoy the comfort of your outdoor space.