Shovelnose can be maintained easily, but as far as I know, noone has been able to breed them. Of course, sexing them isn't easy either.
They do best in washed sand, kept dry, maybe a water dish in the cage a few days a week but no more. They should have a heat pad on one end of the cage but make sure not to overheat. 84 deg is plenty. They stay under the sand all day and come out at night during the Spring and Summer months. They will brumate all Winter so let the cage cool down during that time.
Food: they love to eat spiders, small crickets. I haven't tried waxworms but worth a try. They'll eat scorpions too - the ones that occur in their range.
Cage size: must be small, otherwise it is hard for them to capture their food (in captivity). 20 gal is too big IMO.
-----
Mark G
Collection:
Beautiful San Felipe rosies
Some CA rosies
Some Ariz mtn kings