I have one of the reptile basics 68 tub baby racks and I love it. I've kept as small as 4 gram hatchling spotted pythons in it and never had a worry about escapes, there's not a lot out there that will be much smaller than them hardly, unless you hatch out the occasional extra small runt of a corn, they will be larger than the spotteds. I've also had a number of newborn kenyan sand boas in it, I think 6-8 grams was the smallest of those although that would be much fatter babies than the spotted pythons were. I do have some hatchling bp's in it right now, although they won't last in it for long before quickly outgrowing it and needing to move up to something else soon.