I have never even seen a zebra let alone raised one, but I would assume that as long as the chrysallis looks healthy (hasn't turned dark/black) then I would NOT get rid of them.

~Laura

Swallowtails eclose on their own time schedule. You can't predict when they will make an appearance. So, hold on to those chrysalides. They could even overwinter.

Sandy

thank you everyone

I found one last year and it came out after almost 9 months. Don't give up yet ! Make sure the temperature in your house or the room you have them in is not too cold. it could influence the length of pupa stage