As long as you're not too anxious to start feeding. I've got a friend who started with new colonies of roaches several times before figuring them out. I finally sat her down and explained that it takes a whole 6 months for the roaches to reach adulthood and start breeding. She thought they 'bred like roaches' and was feeding the large ones to her monitors and the smaller ones to her bearded dragons and was wondering why her colonies kept dwindling down to nothing. Once I got her to stop feeding off the adult breeders she started doing much better.