How Often Should A 3 Week Old Kitten Poop?

my kittens are 3 weeks old today and i was wondering if they would poop everyday? my mom is allergic to cats but i think she likes it when the kitten poops on her face…lol http://answers.yahoo.com//question/index?qid=20080703134611AAVkCzR

How often should a 12 week old kitten poop?