they should come out of the sack almost immediately , if they stay in the sack they will suffocate, you can help them out of the sack with a pointed food bamboo skewer works good, take a spoon gently lay them on the floor of the cage, and ULTRA CAREFULLY,SLOWLY, POKE THE SACK WITH THE POINTED END OF THE SKEWER, AT SOME PLACE WHERE YOU CAN POKE THE SACK WITHOUT POKING THE CHAM , IT WILL ALMOST CERTAINLY START CRAWLING FOWARD WHEN IT DOES, CARFULLY PIN THE BACK OF THE SACK DOWN WITH THE SKEWER AND IT WILL CRAWL RIGHT OUT