How to Sanitize and Clean your Humidifier

The air becomes so dry in winter that many of us use a humidifier so that we feel more comfortable. With better management of humidity levels, our skin will feel better and we can ease the irritation of a scratchy throat, chapped lips, and so on. There are also things inside your home that like it best when the air isn’t too dry. Some examples are musical instruments made of wood, wood floors and furniture, and leather goods including shoes as well as sofas. Your house plants will be happier with a slightly higher humidity and you will have lower levels of static electricity. Experts say that the optimal humidity for inside your home is in the 30% to 50% range. This is easy to achieve with a good cool mist humidifier that can help you maintain a healthier, happier home.

These humidifiers are great but they do need regular cleaning, because they are wet all the time and wet things can become places where unwanted growth of molds and mildews can occur. You can easily clean and sanitize your humidifier so that it is free of spores and growths that might otherwise become a health hazard. Here’s how to safely sanitize and clean your humidifier using SNiPER.

What You’ll Need

  • toothbrush or other small bristle brush for scrubbing
  • soft scrub pad
  • SNiPER disinfectant and odor eliminator
  • towel and rag
  • water
  • white vinegar (maybe – depending on whether you have a buildup of mineral deposits, aka  scale)


Remove the reservoir from the base unit and give it a visual inspection. If you see any crusty deposits from mineral content of the water, you’ll need to use vinegar and that scrubbing bristle brush to remove those deposits. Wet a rag with vinegar and wipe those areas and allow a few minutes for the vinegar to work. While the vinegar is working, examine the base unit for those crusty deposits also. If you see them then give the base a wetting with vinegar also. Use the toothbrush and gently scrub away those deposits, being sure to get into the nooks and crannies.

If you used vinegar on the mineral deposits, be sure and carefully rinse away the vinegar residue, which is acidic. Use the towel to dry wherever the vinegar was.


Spray the inside of the reservoir with SNiPER and swish it around. Allow it to sit for up to 15 minutes. During that 15 minutes, swish it around every few minutes times to keep the inner surfaces wet with Sniper. At the end of the 15 minutes, add water until the reservoir is about half full. Cap the reservoir and give it a good shaking. Pour out the Sniper/water mixture and rinse the entire inside of the reservoir

The Base

The base unit from different manufacturers will vary a lot in shape and layout. But you should still be able to spray Sniper around on the base to sanitize and clean your humidifier. You may need to respray to try and keep those areas wet for 10 minutes. Or, you may be able to just wipe it around a few times during that 10 minutes.

The Insides

Mix 2 or 3 ounces of SNiPER with water and add it to the reservoir and run the unit for 10 minutes or so. Since SNiPER is non-corrosive and has such low toxicity to pets and people, this may smell a bit like a swimming pool, but will not cause any harm to you, your pets or the machine. After your machine has run for 10 or more minutes, you can pour the excess out. Give the reservoir a good rinse and then you can fill the reservoir with fresh clear water before putting your sanitized and clean humidifier back to work for you.


How does that saying go? A gram of prevention is worth a kilo of cure? Haha! There is a lot of truth there. You can prevent unwanted growths in your tank by adding a couple of ounces of Sniper to the water reservoir now and then

Why Not Use Bleach For This?

Bleach is highly corrosive and can corrode the seals and gaskets that keep water where it belongs and your unit will start leaking. SNiPER is non-corrosive and you need not worry that it will harm your machine. Not only that, if you fail to rinse away all the bleach and you wind up breathing bleach vapor, it could be quite dangerous for your health because bleach is tremendously corrosive to your lungs

Should I Use Tap Water in My Cool Mist Humidifier?

The EPA tells us that, “Researchers have documented that ultrasonic or impeller humidifiers are very efficient at dispersing minerals in tap water into the air. In addition, some consumers are bothered by a “white dust” that may appear on surfaces during use of these devices. Most importantly, minerals in tap water may increase the development of crusty deposits, or scale, in humidifiers. Scale can be a breeding ground for microorganisms. Retarding the growth of scale is the most compelling reason to find alternatives to tap water.”  If your machine has a demineralization filter – use it!  These minerals are the source of the white crusty deposits that you may find.  If possible, use water that is labeled as “Distilled” if at all possible.


Humidifiers come in all shapes, sizes and capabilities. Your machine may differ quite a bit from mine, but in general, they will all have a reservoir that usually separates more or less easily from a base unit. You should be able to adapt these instructions so that you can sanitize and clean your humidifier both safely and easily

Try Some Today!

Imagine having one cleaner and one deodorizer for all your cleaning needs that is safe, green, and powerful. Now you can!

Get ready to throw out all your toxic products.

Best Odor Control for carpet

Nok-Out and SNiPER are both great products that I use in my carpet cleaning biz to remove odor in carpets. It works great against pet urine odor! It doesn’t cause discoloration and always works. Sniper kills mold and removes the odor in carpets as well. Great products

Grateful Ted

Aviary Parasites

I wrote Ted about parasites in my Pigeon coop: ” I’ve used Sniper for parvo elimination before but I wanted to know if it would kill tricomoniasis parasites in a pigeon coop.” Ted wrote back that he wasn’t sure whether Sniper would kill it, but that Sniper is known to kill giardia – another parasite – so he thought maybe it might, and for sure, it wouldn’t harm any of my birds. I want to tell you that I did use Sniper in my pigeon coop and it seems that it did the trick! No further illnesses after spraying down my coop a couple of times!
We also recently had a partial basement flood. We had cat litter and poop, rabbit poop etc sitting in the water for more than 24 hours. Once we removed the water my basement smelled like a zoo! I sprayed Sniper everywhere using a fogger and all I can say is WOW! My husband had doubts that the smell would go away.

Thank you Sniper!

Lorie Shamaly

Completely Eliminate a Horrible Smell

Mary Hunt introduced me to Nok-Out years ago and I am still amazed at how it can completely eliminate a horrible smell.

Yesterday I hosed some dust off a plastic laundry basket. I left it outside to dry for a bit and then returned it to the garage.

A few hours later I walked into the garage and the entire place reeked of cat pee! I did not realize that the neighborhood tom cat had come by and sprayed my basket. It was so bad that I was ready to trash it, but I thought I would try to spray it down with Sniper first. I doused it liberally and left it overnight. Ta Da! Absolutely no smell this morning!

Even after all these years, I am still amazed every time your product works on a smell as terrible as cat spray!

Thank you, Ted!

Michelle Wilson

Christmas tree and Raggedy Ann

We have an artificial Christmas tree that’s still gorgeous but old. Putting it up always bothers my asthma and irritation from getting scratched is not pleasant. Last year I sprayed the tree and the “old tree” smell disappeared. I had purchased Sniper on Mary Hunts advice and it really took care of the basement (moldy) smell! Great! My daughters vintage dolls with cloth bodies had spots of mold or mildew, these are dolls my grandchildren play with. Oh my goodness! Sprayed the doll’s bodies and yarn hair, and the next day they all smelled great, moldy spots gone ! These dolls were over 30 years old and now look soooo good! Would recommend Sniper for other uses, too. Doggy rug smells gone! Smelly shoe odors gone. Grateful to Mary Hunts column for letting us know. 😊👍⭐️

Theresa Taylor

Rotten Potato Smell Gone!

There cannot be anything worse than potatoes that are forgotten and rot. Any pet I have ever had that had an accident cannot compare. Nok-Out eliminated the odor quickly. What a wonderful product!

Jacqui Frazee, June 14, 2018

“Nok-Out Saved My New Car!”

Thank you for creating such a great product. I would and will recommend this to everyone I know. My son left raw meat in my car for 4 days and I thought that my new car was ruined, but after talking with you and using the product, I can now get in my car and the only thing that I smell is a clean, disinfected smell! Thank you for saving my new car!

Christine McG, Sept 20, 2011

Cats Get Old!

Cats get old. Things happen. Nok-Out was recommended to me by a friend in another state. I Will never go to the pet store again to try any other product. Nok-Out is IT! I told my Veterinarian about it. I love how fast it arrives after ordering. I ordered three times because we are still working on issues, but at least the house doesn’t SMELL! Amazing product. THANK YOU!

Mary Lee, June 19, 2016

I Am Amazed at The Results!

I learned about Nok-Out from Mary Hunt’s Everyday Cheapskate column and had to try it. Shipping was so fast and your customer service is OUTSTANDING! I am amazed at the results! I even filled a tiny spray bottle to keep in my car. I won’t be wasting my money on any other cleaners anymore. You have a lifetime customer here. Thank you so much!

Natalia Johnson, Aug 28, 2018

Sniper Eliminated Our Mold Problems!

We’ve used SNiPER disinfectant for several years. It works great. It has eliminated our mold problems and, still, we use it to keep our wooden cutting boards safe.

Robert Moretti, Jr. , Oct 31, 2018

Removed All The Feral Cat Urine

Sniper has been AMAZING. I was able to completely remove all the feral cat urine scent from the carpets, mattresses, clothing, and toys. It worked beautifully and left no smell, no fumes, and didn’t leave any discoloration. Sniper is now my cleaner of choice and I use it everywhere to clean and sanitize as well as freshen the air. I even use it in my daughter’s gym shoes and soccer bag. Thank you so much. Seriously the best product on the market.

Sniper Removed Old Water Odors, Mold & Mildew

I have been using Sniper in the Offshore oil industry as both a disinfectant and a deodorizer for years. It has eliminated old water smells of toilets and bathrooms not used in a year where the water sat and molded mildewed and stank. As well as being injected into our old quarters ac vents to prevent mold buildup. Always worked better than anything comparable and well worth the price.

Tim Gaynor, Jun 5, 2017

My Mildew Stain Disappeared!

I brought in the plants for winter and when it was time to move them back outside in the spring, I had a mildew stain on the carpet. I received my Nok-Out Carpet cleaner and sprayed the stain and let it sit for 10 minutes. When I returned to scrub the stain it was completely gone!! Woo hoo!! Thank you, Mary Hunt, for introducing me to this wonderful product!

Jodie Hodges, May 28, 2014

Nok-Out Removed Old Dog Urine Odor

I have an Electrolux rug shampooer and was trying to remove old odors of dog urine in my oriental carpets. I shampooed them then put a concentration of 4-1 water to Nok-Out in the tank and went back over them. No more odor!! Worked great! Was sooo happy!

Laurie M Lijoi, Oct 2, 2019
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