Dirt!

I'm so relieved to see research like this out there:

Babies and dirt go together just fine

A recent study suggests that early exposure to allergens strengthens babies' immune systems and protects them from allergies and asthma later on. Read Dr. Parker's entire "Healthy Children" post on the topic (there are a couple caveats), then throw away your antibacterial soap, give the feather duster the day off, turn up the music, and roll around on the floor with your baby. As my man Dr. P says: "Life is messy and maybe that's not such a bad thing after all!"
link

I am allergic to cats, pollens, dust, etc. and yet I am an abysmal housekeeper. Lets hope Boyo benefits from my lack of cleaning! We have the optimal set-up: two cats, one dog and dust.