No Cheryl, I never have kept them seperate from anything. Now, one time one was sick really bad and he felt bad, so, what I did was kept the sick one in my room and sprayed lysol throughout the house a couple of times a day and the other one never got sick. I was thinking to myself about what my grandmother always said...spray lysol a day keep the bugs away!. I am starting to believe this...lol.
On the normal tho, when one is sick....I can expect the other one right behind him to get sick within the next week or so.