How to Remove Crawl Space Odors

  • 25 Mar, 2010
If you, like millions of people in the United States, have a house built on a crawl space, you are likely to have odors inside your house that came from the crawl space. This is not an unusual situation especially if your house is air conditioned. The post How to Remove Crawl Space Odors appeared first on Odor Removal for Just About Everything.
If you, like millions of people in the United States, sometimes you just need to know how to remove crawl space odors when when you live on a crawl space and even when your house is air conditioned.
The odors that you are likely to be getting from the crawl space  are:
  • musty,
  • dead animal odor,
  • rodent/pet urine and feces.
Even if your crawl space is very dry most of the time, on very hot and humid days, the warm and humid breeze blows into the multiple screened vents in the foundation. If the cool area under your house  is below the  temperature of the outside air, condensation forms on all the cool surfaces.  This allows mold or mold spores to grow in the area.
If there is rodent or pet urine in the area, the high humidity will cause it will begin to producing the stinky gas called mercaptin and you’ll know something used to live there.
If your crawl space is not really dry, these conditions exist almost all the time.
How do these odors get into your house?
Air leaks.  Air leaks can be large or small and include but are certainly not limited to:
  • Plumbing clearance holes in the floors and walls.
  • Electrical outlet boxes, ceiling light fixtures, and switches.
  • The gap between the heat/AC fittings in the floors or walls.
  • Leaks in the return air ducts.
  • Leaks around windows and doors.
All of these leaks allow outside air into your home and bring in odors with them especially the leaks from the crawl space.  And let rodents crawl into your house too.  UGH!
How can these leaks be stopped?
In most cases they can not be stopped, but the work around isn’t all that complicated because the goal is to stop the air in the crawl space from entering your home not to stop all the air from entering your home.
One solution though not the best one would be to pressurize your home with a fan blowing in from outside.  Then all the leaks would leak out instead of in. The obvious problem with this is that it would be forcing hot or cold air into your home that the heating and air condition system would have to deal with.
A better solution is to close all but 1 vent in the crawl space and install a small quiet fan blowing air out of the last vent. One would likely think that this would have very little effect on the air pressure in the crawl space but in fact it can and does.
The main clue is to cover the hole on the outside with a metal window screen material (usually copper)  and cover that with 1/4″ hardware cloth to keep the bugs and critters from getting in.  The fan should be left to run 24-7-365 to keep out moisture and eliminate musty crawl space odors.
If you have urine odor, feces smells or dead animal smells,you will want to treat the contaminated areas with OdorXit Concentrate, sometimes several times to get it down into the dirt or concrete to treat the urine that runs there.  DO NOT USE A PRESSURE WASHER!!!! Especially on concrete. Driving the source of the smell deeper with high pressure water is not a solution.
If there is a heavy musty and/or moldy  smell you will want to treat the crawl space with OdorXit AQM.  Usually 2-10 gram per 1,000 sqft will do the job unless you have lots of visible mold blooming on what ever is in the crawl space. Wet cardboard and clothing are the worst. Remove them before activating the AQM packet(s).
I will have more to say about pet odors and mold in crawl spaces but the ventilation issue is really the big one.

OdorXit Odor Eliminator

By Terri Friedhoff 24 Oct, 2017

The recent storms that have ravaged multiple parts of the US have caused unprecedented damage. If you or your loved ones were affected by any of these storms, our thoughts and best wishes go out to you. Because these storms were so large in scale, people have experienced everything from moderate to complete damage.


Since getting rid of bad odors is our area of expertise, we want to help anyone who lost power for an extended period of time during one of these storms but didn't face complete damage to their home and belongings. Even if you're dealing with a refrigerator that smells incredibly bad due to it being fully defrosted and having items like frozen food decompose for days or even weeks, we want to go over how you can fully restore your appliance to its former condition.


5 Steps to Saving Your Refrigerator After Losing Electricity


The first step is to remove all of the spoiled food. This can be a truly nasty and smelly experience, which is why you'll want to wear a protective mask and gloves as you do it. Once your refrigerator is clean, take it outside and spray it out with a garden hose. If you have a truck or access to one, consider taking your appliance to a car wash and use the high-powered equipment to spray it out.


The next step is to spray one ounce of OdorXit Concentrate mixed with 30 ounces of water everywhere the refrigerator smells. That means spraying the insulation behind the doors,

under and around the door gaskets, the inside, behind the drawers and every little opening where the defrosted food might have dripped. Once the OdorXit Concentrate solution comes in contact with the rotten food smells, it will remove them from your refrigerator completely and safely.


The second to last step is to let the refrigerator dry outside then bring it back in the house. Don't panic if it still smells a little. It just means there is still at least one spot that hasn't been treated yet. You'll be able to knock it out by continuing to sniff and spraying wherever you detect even a slight odor.


The final step is to remember to be a good neighbor! Spray a few shots of the OdorXit Concentrate solution in the drain at the car wash or wherever you ended up treating your appliance. Anyone who comes by after you will be very glad you did.


By following the process above, it's possible to save even the worst smelling refrigerator, which in turns means saving hundreds of dollars by not needing to buy a replacement. So if you know anyone who's currently trying to restore belongings like their refrigerator, feel free to share this post with them by email or on Facebook.


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