Nutri-Vet Grass Guard Max liver flavored chewables are a great way to reward your dog while treating yourself to a spotless lawn. These liver flavor chewables contain a unique blend of probiotics for dogs, plus other natural ingredients designed to neutralize high pH urine that can damage grass. Veterinarian formulated to prevent lawn burn and yellow areas on grass and shrubs by neutralizing nitrogenous waste, maintaining a slightly acidic urine pH, and binding ammonia in urine and feces. Digestive enzymes (amylase, protease, lactase, lipase and cellulase) facilitate intestinal nutrient assimilation to help minimize urinary nitrogen. dl-Methionine, a sulfur-containing essential amino acid, helps acidify urine. Probiotics help maintain intestinal health and diminish urinary tract nitrogen. Made in the USA with globally sourced ingredients.