The K9 Pet Grass system is designed to prevent odor and accelerate drainage. We install a layer of drain core under the surface so water can flow freely beneath the blades, and we encourage frequent flushing of the lawn, too. I f you are concerned about odor from your pet turf, be sure to clean and flush it often with water and sanitizer. See our knowledge base for all the best tips for maintaining a pet-friendly lawn, including prevention of odor.