I've told people who have taken the pet-quality critters that if they find they can't take care of it due to illness or money issues due to job loss, can't have it in a new apartment, etc. to contact me and I will take it back. I won't pay for it, but I will ensure it goes to another home.
These animals can live for decades and I figure that I brought them into the world so it's up to me to ensure they get the best possible homes throughout their lives.