Tomato Crumbles for Rodents Dovoplus Herb Crumbles is a natural crumble based on tomatoes. This version contains tomatoes. The crumble is used as part of a diet for your rabbit or rodents and should be of high quality. The crumble contains a lot of fiber and other important nutrients that the rodent needs, and it supports good intestinal flora. Additionally, the crumble is essential for the natural wear of the rabbit's or rodent's teeth, and to avoid damage to the molars and incisors.