'Tis the season... for FLU and COLDS.
I've seen this same list a few times before, but it's always fun to disturb people with the actual bacterial counts.
Average bacteria counts per square inch:Toilet bowl: 3.2 million bacteria/square inch
Kitchen drain: 567,845 bacteria/square inch
Sponge or counter-wiping cloth: 134,630 bacteria/square inch (I've seen this listed much higher)
Bathtub, near drain: 119,468 bacteria/square inch
Kitchen sink, near drain: 17,964 bacteria/square inch
Kitchen faucet handle: 13,227 bacteria/square inch
Bathroom faucet handle: 6,267 bacteria/square inch
Bathroom sink, near drain: 2,733 bacteria/square inch
Pet food dish, inside rim: 2,110 bacteria/square inch
Kitchen floor, in front of sink: 830 bacteria/square inch
Toilet floor, in front of toilet: 764 bacteria/square inch
Kitchen counter-top: 488 bacteria/square inch
Bathroom counter-top: 452 bacteria/square inch
Garbage bin: 411 bacteria/square inch
Dish towel: 408 bacteria/square inch
Toy: 345 bacteria/square inch
Kitchen tabletop: 344 bacteria/square inch
Home office phone or refrigerator door: 319 bacteria/square inch
Toilet seat: 295 bacteria/square inch
Bathroom light switch: 217 bacteria/square inch
Microwave buttons: 214 bacteria/square inch
Kitchen chopping board: 194 bacteria/square inch
Child-training potty: 191 bacteria/square inch
Infant changing mat and infant high chair: 190 bacteria/square inch
(shopping cart was somewhere right around here, but I can't find comparable counts)
Kitchen phone: 133 bacteria/square inch
Bathroom door's inside handle: 121 bacteria/square inch
Toilet's flush handle: 83 bacteria/square inch
TV remote control: 70 bacteria/square inch
Home office computer keyboard: 64 bacteria/square inch
Home office computer mouse: 50 bacteria/square inch
(bacterial counts from The Hygiene Council, funded by Reckitt Benckiser, parent of Lysol)
Lest you go OCD about cleaning, I've seen a couple of different reports that studied cleanliness versus ultra-cleanliness. Apparently you can over-do it by sterilizing every day, which harms your internal biome and compromises your immune system a couple of different ways, making you MORE susceptible to infection. One of the most recent studies I've seen said that using bleach once a week increased your risk for COPD (chronic obstructive pulmonary disease) by 20 to 30%. Oops. Make sure you run your ventilating fans (kitchen and bathrooms) for a couple of hours after using bleach to exhaust that toxic stuff out of your home.
Here, I have separate cutting boards, one for meats and one for everything else, and the one that raw meat touches gets a dilute bleach wash after every use (every 1 or 2 weeks). Everything else in the kitchen and bathrooms gets an antiseptic wipe-down every 2 weeks with paper towels and Seventh Generation Disinfecting Multi-Surface Cleaner, and I don't use a sponge... EVER. In the bathroom, my toothbrush sits in the medicine cabinet, and it gets a 70% isopropyl alcohol rinse every week.
Did you know that you aerosolize some of the bacteria in your toilet every time you flush? Yeah, that shit can actually travel up to 20 feet. Please don't leave your toothbrush or cosmetics out in the turd fog.
The strongest antiseptic is a dilute bleach solution, anywhere from 1 teaspoon bleach per quart/liter (replace every few weeks) to a 1:10 mixture for heavily soiled areas (public bathrooms). Bleach is what Doctors Without Borders uses against Ebola. Second-best is 70% isopropyl alcohol (IPA), or IPA plus BZK, and that's what the CDC recommends for a general antiseptic/antibacterial as it kills 99.999% of germs; Lysol only kills 99.9% Everything else ranks WAY down below (IPA or IPA + BZK) in virus/bacteria killing efficiency. If you used Lysol on your toilet bowl then it's STILL more infected than your (untreated) bathroom sink drain.
At work, we use Clorox Disinfecting Wipes (70% IPA plus BZK), Clorox Professional Disinfecting Spray (70% Ethyl Alcohol + BZK) and dilute bleach, as well as 70% IPA hand sanitizer. That combination cut our influenza to about 1/8th of what was reported elsewhere in Dallas last year, and we're doing it again this year.