Cool Best Gerbil Food References. Citrus fruits can irritate the mouth and cause sores, so citrus fruit should not be on a gerbil food list. Many commercial foods contain the proper mixture of nutrients.

Gerbils like a nutritious diet with protein, fat, low fiber, and lots of vitamins and minerals. Citrus fruits are highly acidic, and therefore are best avoided in gerbil diets. 5 rows check price.