West Side ENT Update>
An Allergist's Nightmare: The Micro-Poop Theory

May 9, 2008

One Western tradition that I find truly puzzling is the 
custom of wearing shoes inside the house. Although some of 
my non-Asian friends have banned shoes in their homes after 
they have children, I still find that a majority of 
Americans and Europeans continue to wear shoes inside their 
homes. Unlike Eastern cultures that consider this practice 
unsanitary, many Westerners don't think much of it even 
though this can be harmful for someone with allergies. 
 
Leave Your Load Outside 
 
As someone who specializes in treating nasal allergies, I 
cringe whenever I see dog poop on the sidewalk. Imagine 
that a beagle poops on the sidewalk in front of your 
apartment and the owner is negligent in cleaning up after 
the dog. You later walk home from work and as you approach 
the entrance of your apartment, you see the dog poop just 
in time to avoid stepping in it. You're disgusted that it's 
just sitting there and that the owner didn't have the 
common courtesy to clean up afterwards.  
Let's say the next day the same dog poops again in the same 
spot and the owner doesn't clean up. The building 
superintendent happens to be watering the garden, notices 
the dog feces, and hoses it away towards the street into 
the gutter. You then walk by a few minutes later, and step 
in the area where the poop used to be, but you don’t notice 
this since it’s now covered in a thin layer of water. You 
walk through the lobby and up to your apartment. 
Now this is where it starts to get really problematic. Many 
people assume walking over lobby carpeting or the door mat 
in front of your apartment would have wiped any residual 
poop particles off your shoe. But think about this: if you 
step in poop and take a towel and wipe it off vigorously, 
is it really off? Even if it's a wet towel, can you be 
truly certain that your shoes are truly free of all fecal 
matter? 
This situation doesn't just apply to dog poop. This also 
applies to human phlegm, gum, dog urine, bird poop, 
chemicals, car oil, pollutants, bacteria and molds and 
whatever else you might find on the sidewalks of New York 
City at any time of the day. How many different kinds of 
germs or chemicals, organic or non-organic, are still stuck 
to the bottom of your shoe when you enter your apartment? 
“Yes”, you say, “but I clean the floors all the time with 
disinfectant cleaning agents”. My answer to that is, "Yes, 
you can mop the floors every day, but you literally can't 
mop after every new footstep". Your carpet is like the 
towel that you originally used to wipe your shoes off with, 
only now you're living on it. Even worse, you let your 8 
month old toddler crawl on your freshly mopped floor, not 
realizing that it's already been contaminated by your 
husband after he came home, bringing home his daily dog 
poop.  
This is not even considering the amount of toxic chemicals 
found in most cleaning agents. Unless you put your shoes 
through a mini-shoe wash with soap and water before 
entering your apartment every time, it's impossible not to 
bring in microscopic pieces of contaminants into the 
apartment.  
 
Go East And Tread Lightly 
In Far Eastern cultures, it's customary to take off your 
shoes before you enter your home. You can either enter 
barefoot, with socks, and more commonly, using indoor 
slippers. Given this scenario, there’s less of a chance of 
the scenario mentioned previously. This is not to say that 
there aren’t any germs present already in your carpet or 
floors. However, in this case, you’re not adding an 
additional load of microscopic pieces of dog poop, urine, 
dirt, or spit inside your apartment.  
In this age of paranoia about germs and flesh-eating 
bacteria, every other hand-soap is "anti-bacterial", and 
cleaning agents are measured by their 99.99% germ killing 
abilities. I can't help but to see this major disconnect, 
where we're obsessed about germ-free hands, but totally 
ignorant about the pseudomona riding on the soles of the 
shoes worn inside homes.  
 
Disinfecting Versus Desensitization 
 
One of the major theories about why there are so many 
people with allergies today is that as a society, we're 
using too many antibiotics, whether it's through 
prescription medications, anti-bacterial soaps, or even 
disinfectants. Because your immune system learns to 
differentiate itself from foreign substances by exposure, 
over time, chronic long-term exposure to dust or any other 
type of allergen, allows your body to learn that low levels 
of dust are tolerable. This is similar to what happens when 
you get allergy shots. It’s just another form of 
desensitization. What this means is that if you don't have 
a low level of exposure to common allergens or foreign 
substances, then your body thinks it's a brand new foreign 
material and initiates an allergic reaction. 
However, the kind of bacteria that we introduce into our 
living room via our street contaminated shoes presents a 
much different scenario. In this situation, the type of 
contaminants on the soles of your shoes are not only 
“foreign” to most living spaces, they’re toxic. 
 
Are We Allergyphobic? 
 
I realize my micro-poop theory is a little far fetched, but 
this is only an extreme example of common situations that 
we as a society stress about too much. We probably don't 
need antibacterial hand-soaps. Regular soap is fine to 
remove dirt, viruses or bacteria. The amount of dog poop 
tracked into the apartment is probably too miniscule to 
cause any harm. But the thought of bringing in your 
poop-laden shoe into my house after a few wipes on the 
lobby carpeting is still a little unsettling. 
I know there are people who have objections about going 
shoeless in the house. Floors can be cold, our feet look 
ugly, and sometimes our feet can smell. But let me leave 
you with the one thought: Would you prefer your toddler to 
be exposed to her father's foot sweat, or someone else's 
dog's poop?