Thanks for the advice. Where I got them - they were use to using one litter box and only used feline pine. I just continued to do what the previous owners have done.
What kind of physcial problem could the stress create?
We've recently acquired 2 grown cats (about 6 years old) who are brother and sister. When we first brought them home - they were fine and stayed under the bed for majority of the time. They have used their litter box and I was extremely happy it seemed the transition went well. Until....the...