The advantage of using such boxes is that they are easily and inexpensively replaced with bigger ones as your monitor grows. Keep in mind that, when designing a naturalistic terrarium, monitors come from rather sere surroundings. Lighting Monitors, like other lizards, do best with ultraviolet B for calcium metabolism, and a regular photoperiod. Set the timer to be one 10-12 hours a day, slightly less during the winter. As the hatchling grows bigger, switch to fuzzy mice.
Savannahs are secretive, especially small ones who are prey for other, larger, animals.
The exercise they get chasing the crickets is good for them, so do feed them crickets during this period as long as they will take them. Too much of even safe dog food may be harmful. Cat food should be avoided as it is very high in fat. Rodents should ultimately be the staple food source in your monitor's regular diet. Full grown monitors will eat full grown mice, small rats and small hamsters.