heres where it gets tricky... honestly everyone says something different. Personally from my first hand experience and the person I just bought my enclosure from our vets told us mice are one of the worst things to feed to them cause they can get clogged by the hair. Mine did it got a mild prolapse. I guess as an alternative you can feed the SDZ periodically like every other time to clean them out. Been using it for 2 months and it has regular bowel movements. THe problem with the SDZ diet is the fact that most people do not mix it correctly and the fact that it should not be the staple diet. MOst peiple on here say dont use it. Well I say use whatever works for you but mainly what works best for your tegu and maintains its upmost health. An alternative that I have been thinking about besides mice are rat fuzzies they are larger and have less hair than hopper mice also you could try pinky rats or large pinky rats if you can find them but most places dont always have them in. Heres what it says off of agama international in regards to wild b&w stomach contents "According to Achaval (1977), its food consists mainly of insects, snails, bird eggs, fruits, and vegetables. Dr. Cei (1986) writes that this lizard eats birds, small mammals, insects, mollusks, fish, amphibians, and fruit. Claudia Mercolli and Alberto Yanosky describe the food more extensively in the Journal of the British Herpetocultural Society (1994, vol. 4). They examined the stomach contents of 70 Argentine black and white tegus (bought from hide-hunters) in northeastern Argentina. They found that 66.8 % of the stomach contents consisted of vegetable matter; 12.9 % were invertebrates; and 20.3 % were vertebrates. This stands in contrast to what herpetoculturists tend to feed their tegus: almost 100% rodents and eggs. Dr. Fred Frye (1981) warns that the overuse of infertile bird eggs, such as readily available chicken eggs, can result in a lack of biotin." So mainly in wish to mimic the diet of the wild around 70 % of its its diet would be vegetable matter. Its tricky cause everyone says something different: Im not a vet, im sure your not, and most people who say stuff arent also but they probably have first hand experience for whats worked for them. People just give their advice you pick what to use.