Board Thread:Questions and Answers/@comment-92.2.236.163-20130601165824/@comment-5089372-20130601233742

No, they don't "go bad" or disappear. If you have an extra nest and want to hold onto it, it will stay there with no problem.

If you only have one nest and you will not be able to get the habitat for a long while you may want to sell it and try again once you can afford it.