Garden Repellent for Dogs & Cats Repellent crystals to deter animals from toileting in an unwanted area. Repellent crystals to deter animals from toileting in an unwanted area. Scatter the crystals where you don’t want the animal to go and in a short time the animal will associate the treated area with something unpleasant and avoid the area. Repellents are enveloped in biodegradable clay granules allowing for safe and continuous action. How to use Scatter repellent crystals on lawns, flower beds and around plants, shrubs etc. to deter animals from fouling the area. This product can also be used around garbage bins and along fence lines. Repeat application eveyr 3 to 4 days or as often as necessary, until undesirable habits have been broken or animals stay clear of the area. The pet repellents are enveloped in biodegradable clay granules allowing for continuous action. Before use, remove any animal droppings and completely hose away any odour. After a short time, the animals will associate the treated area with something unpleasant and will avoid that area.