There are a couple of factors that play into how often you would have to use Turf Fresh. The first factor is the size of your yard. The larger the yard, the less frequent you will have to use Turf Fresh. The second is the number of pets you will have on the turf. The more pets, the more frequent you will have to use it. So for average sized yards, you are looking at using Turf Fresh 1 time every 2-3 weeks for 1 dog, to 1 time every week for 3+ dogs.