The BlogPaws Conference in South Carolina gave each attendee big swag bags of toys, food, etc. PetSafe's SlimCat Interactive Cat Feeder was in the bag. I filled the plastic balls with their fav dry food and set them on the floor. Inkee-Bear figured it out first. Each ball holds 2/3 cup of dry food/treats; they are dishwasher safe with BPA-free plastic. It provides small portions while they 'hunt' their food and expend energy. This is not a sponsored ad. This is simply what the Cat Authors do best - eat.