The Simple Solution Patio & Decking Stain & Odour Remover is the perfect solution for removing pet waste odours. With the latest bacterial enzyme technology, it works quickly and effectively to give you professional results. After use, the grassy scent will leave your patio smelling fresh and clean. Each bottle can cover up to 25,000 square feet and can be used on decking, furniture, concrete, rock, and more. It can also be used on artificial grass, though it should be diluted first with a watering can (mix one part solution with four parts water). This will help ensure the product is properly absorbed and will not just flush away.