Does MonoFoil really work?

MonoFoilTM is an exciting cleaning product that claims to kill germs for "up to 30 days" after application! Wouldn't that be wonderful? I simply had to test it. I purchased the MonoFoil wipes and designed an experiment. 

About the Scientist

If you are new to my website, let me tell you a little about myself. My name is Annie Pryor. I have a Ph.D. in biochemistry from The Ohio State University. After a few years working in a research lab, I "retired" to be a stay-at-home mom. When my first baby got a terrible stomach virus that required a trip to the ER, I decided to research the subject and created this website dedicated to reducing the prevalence of the stomach "flu" in the world. My 3 little kids keep me busy, but I still get a hankering to do experiments now and then. I've tested cleaning productshand sanitizersproduce washing techniques, essential oilsNorwex ClothsSteriPenslaundrylunch box coldnessthe Phone Soap, spongesand even sunlight. I also happen to be the inventor of a really useful drying rack. I invented it because I needed a convenient place next to the kitchen sink to hang baby bibs up to dry between meals. It is also perfect for drying sports water bottles, dish cloths, food-storage bags, cleaning cloths and many other items. I have a shorter drying rack (12.5 inches tall) and a taller 15 inch rack. The Mommy Genius®  Drying Racks are manufactured in the USA and are available on Amazon. If you would like to be informed when new experimental results are posted, please like my Facebook page

I am also very proud of my daughter, Katie Scarlett. At age 8, she has written, illustrated, and published the first 2 books in a delightful series! Princess Katie and the Fairy Tea Party and Princess Katie and the Mermaid Lagoon are available on amazon. The stories are so sweet and teach about kindness, forgiveness, and including others. I think every little girl would love them! Please consider buying them for a little girl that you love. Katie gets about a $2 royalty from amazon for each book sold that is getting deposited into her college savings account. 


First I washed and rinsed my kitchen countertop thoroughly. Then, I used masking tape to make squares on my kitchen countertop. I labeled the squares "Dirty", "MonoFoil Before", "Monofoil After", "Clorox Wipe", and "paper towel and water". 

Then I rubbed one MonoFoil wipe all over the square labeled "MonoFoil Before". I wiped and rubbed and fully covered the square. 
Then, I let it sit for 24 hours. No one in the house touched the countertop.

While I was waiting, I made some "germ juice". To do this I mixed up a tiny spoonful of mud from the backyard in some water. I poured the mixture through a paper towel to filter out any solid debris. The resulting dirty water was the color of tea. 

When 24 hours were up, I poured 1/4 tsp of this germ juice onto each square. 

I rubbed the germ juice all over each square (completely covering it) with my gloved hand. After, I rubbed the germ juice into each square, I let the squares dry for about 1 hour. 

When the squares were completely dry, I used sterile cotton swabs to take samples of bacteria from the "dirty square" and the "MonoFoil Before" square. (That square already had MonoFoil on it so it SHOULD have less germs than the dirty square). First, I dipped the sterile swabs into sterile water. (Getting the swabs wet helps bacteria to stick on it.) Then rubbed the sterile swab all over the square in a zig-zag fashion. I made 40 passes all over each square to collect as many germs as possible. Then I rubbed the swab in a zig-zag fashion all over a new agar plate. I also did a negative control plate where I just dipped the sterile swab in the sterile water and rubbed it all over an agar plate. 

After I collected the samples from the positive control "dirty" square and the "MonoFoil Before" square, I had to do some cleaning. I thoroughly cleaned the "MonoFoil After" square with one MonoFoil wipe rubbing back and forth all of the square many times. I also did the same with one Clorox wipe in the "Clorox wipe" square. I also did the same with a slightly wet Bounty paper towel.  After about 15 minutes, when those squares were dry, I collected samples from those squares.

All of the agar plates were put in my homemade incubator (constructed using a plastic box and a heat lamp) that is about 90 degrees F for 24 hours. 


After 24 hours,  I took these photos. 

As you can see, applying the MonoFoil to the countertop beforehand did not reduce the amount of live germs. Both the MonoFoil wipe and the Clorox wipe did a great job killing/removing germs AFTER the germ juice was applied. I am AMAZED at how well just a wet Bounty paper towel did at removing germs!!!

I have repeated this experiment with MonoFoil 4 other times and have gotten the same results. One time I let all of the dirt settle out of the "germ juice". I figured that MonoFoil might do better if the countertop was less "dirty". The results for this experiment looked a little better. There seem to be a little less germs on the "MonoFoil Before" plate as compared to the control dirty plate. These are the best results that I have been able to achieve for MonoFoil. 

In conclusion, I was not able to show that applying MonoFoil to a surface will keep the surface free of germs. This does not mean that "monofoil doesn't work". It just does not appear to continue killing germs after application in my experiments. It does a great job as a regular cleaning wipe, though. 


Future Work
I have tested the Thieves Cleaner and put the results on the cleaning products pageI have many more experiments to do! I'll be posting all of my dishwasher results soon. I have tested the PureWash Pro laundry system and will be posting those soon. I am also working on experiments testing many more cleaning products including Honest Company and Better Life. If you would like to suggest a product or experiment, please e-mail me If you would like to be informed when new results are posted, please like my facebook page. I always post on there when new results are up. If you would like to help support my work, please use my Amazon links when you shop on amazon. I have an Amazon affiliate account. If you use any of my Amazon links when you shop on Amazon, I get a small percentage of the sale. For example, you can click to Amazon using the link for my daughter's book and buy something. It doesn't matter what you buy, but I will get a small percentage of the sale. I use that Amazon money to buy agar plates and all the supplies that I need to do these experiments. If you don't want to bother using amazon links, you are welcome to send me a small donation through paypal. If you really want to brighten my day, please buy one of my daughter's books. They are excellent! If you don't have a little girl to give them to, buy a copy for your local elementary school library or children's hospital. 

If you want to read more of my experiments, please check out this list. 

Lastly, before you leave, please brush up on your knowledge of stomach bugs so you can help decrease their spread by reading this page of my website. Thank you!

--Annie Pryor, Ph.D 
phd.annie at