Which kills the germs BEST!?

I was amazed with the results of a biochemist Annie Pryor's research on the effectiveness of household cleaners. Our bodies, produce, carpet, floors, clothing, and environment are full of germs. Most of them are harmless or even helpful. Everyone gets PLENTY of germ exposure. Toxic cleaners tout the ability to keep us safe from 'bad germs' and natural cleaners tell us they can do the same job without additional toxins. I have been using vinegar for the past several years. I hate the smell but thought it best for keeping bathrooms sanitary.

Annie Pryor has a Ph.D. in biochemistry from The Ohio State University. After a few years working in a research lab, She "retired" to be a stay-at-home mom. When her first baby got a terrible stomach virus that required a trip to the ER, she decided to research the subject and created this website dedicated to reducing the prevalence of the stomach "flu" in the world. 

Her research and results are posted in full at her website: http://www.stopthestomachflu.com/Home/which-cleaning-products-kill-germs-the-best#TOC-About-the-Scientist


TEST RESULTS FOR: White Vinegar, Isopropanol, Hydrogen Peroxide, Method All-Purpose Cleaner, Thieves Spray, Lysol Disinfectant Spray, and Zylast Hand Sanitizer

In the following experiments, I tested pure white vinegar, Lysol Disinfectant Spray, 70% isopropanol, 91% isopropanol, 3% Hydrogen Peroxide (H2O2), Method All Purpose Natural Surface Cleaner, Thieves Spray, and Zylast Antiseptic hand sanitizer. (Zylast Antiseptic is one of the few hand sanitizers that I recommend for killing norovirus.  I put 1mL of dirty germ water on each square. In the first experiment dated 5-3-2015, the germ water did not have additional bacteria added. The experiment dated 5-5-2015 DID have additional bacteria added. I used .5mL of each cleaning product. To get .5mL of the Lysol spray, I sprayed it into a plastic cup and then got .5mL in a syringe. 

Hands down the winner for effective cleaning is that brown bottled buddy (found in the wound care section of the store) Hydrogen Peroxide. 


As you can see, only the 3% hydrogen peroxide and the Zylast hand sanitizer seemed to do a great job.


 

Procedure

To test cleaning products, I used masking tape to section off squares on my kitchen countertop and labeled them according to what I would be testing. I made sure that my countertop was very clean to start with, of course. 



Next I made germy water. To do this I mixed a small scoop of mud from our back yard into purified water. Then I poured the muddy water through a paper towel to filter out the chunks. I was left with very dirty water which contains lots of bacteria. For some experiments, I also scraped bacteria off of an already grown agar plate from a previous experiment and mixed those germs in. This way my "germ water" had lots of bacteria in it. See her complete testing procedures here

Learn More about how to CLEAN with H202? 

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