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Removing Odors from a Basement

Category Odors
unfinished basement
Basements often lack proper air circulation that can breed mold and mildew. This is a guide about removing odors from a basement.
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Questions

Ask a QuestionHere are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community or ask a new question.

January 16, 20120 found this helpful

I have the smell of rotten onion in my basement, we can't find the source. Do you have any suggestions?

By Sherrie

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January 17, 20120 found this helpful

I googled "rotten onion smell in basement" and got some really good articles, including one from here in 06. I hope that helps.

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January 18, 20120 found this helpful

Could this be an animal marking its territory, or nesting? I have cats, so don't have such issues. An animal in your case might even be a snake, since they may deposit odors. It is winter and animals seek the warmth of the indoors. I hope you figure out what it is. It seems like an animal must be the source.

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January 22, 20120 found this helpful

Check to see if you have any dry sink or bath tub drains. If you have a bathroom or wetbar sink that isn't used regularly, a dry trap can let sewer odors back into the home. Do you have a dry sump pump? Same problem. Do you have any plants in water vases? If water is not changed regularly, roots begin to rot and stink. Are you storing any root vegetables that might be going bad?

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May 25, 20170 found this helpful

I had a pipe break in my cellar and now it has a sewage smell all the water fell on the floor how do I get rid of it

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By 0 found this helpful
February 26, 2017

We have had this horrific smell coming from the basement for about 5 days. It's working it way upstairs. We went through a storage area where the smell was coming from, but we didn't find anything dead. That's how bad this smell is. The smell is in the bi-fold door to the storage area, but we can't figure out what's causing it. It's Saturday and I called a company that handles odors in the home, but they were closed. We do not have any gas in our home and my husband checked all the drains. Can you give any suggestions? Please?

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Answers

February 26, 20170 found this helpful

I am pretty certain that what you are experiencing is a dead animal. I have had this happen to me before, especially at times when i was putting out traps for rodents.

I once spent 2 days where all I did was look for the decaying corpse of something in our apartment. I did eventually find it, but it was not fun. It involved going in the attic, pulling apart a bunch of boxes, pulling the whole house away, etc

Most likely the thing died inside your walls, which is why you can't find it.

it could also be a sewage problem, but I think you would know what sewage v decomposing body smells like.

if it is a dead thing and you just can't find it, take heart: if it's a mouse, it should not last longer than a week. But if it's a bigger thing, you might be stuck with it for up to a month. The thing will smell until the animal has decomposed to the dry bones.

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March 3, 20170 found this helpful

it's caused by rain and the sewers outside your home-dead leaves and other garbage decompose and the smell has nowhere to go but up and out. try and get the neighbors not to rake leaves into the street

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By 0 found this helpful
June 10, 2010

How do I remove pet odor from a concrete basement floor?

By Ann from Indianapolis, IN

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June 10, 20100 found this helpful

Use the "Pee Recipe" - it's not just for pee.

2 c. peroxide

2 t. baking soda

2 small drops liquid dish detergent

Mix gently and then pour on area. Do not wipe up - let it dry on it's own, undisturbed, for however long it takes. The smells will be gone. You can use this on dog, cat, human urine, feces, vomit. On carpet (test for colorfastness first in an inconspicuous area), mattresses, concrete, etc. Using a watering can (with sprinkler top) helps to distribute more evenly.

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By 0 found this helpful
July 14, 2013

My basement flooded. After the water drained it left a terrible odor. What can be used to remove the odor?

By Vivian T B.

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June 10, 20101 found this helpful

My son is selling his house and the basement has a horrible dog odor from where the dogs were kept. Can anyone suggest a solution I can apply to neutralize the smell? The area has a concrete floor.

Rose from Malvern, PA

Answers:

Dog Odors in a Basement

You can buy a product called OdoBan. Wal-mart sells it in a spray bottle, or you can get it at Sam's in gallon jugs of concentrate. Either way, spray it liberally on the floor and let it set for a few minutes before you mop it up or hose it off. It might take a couple of times, and I'd just leave some on the floor to dry when you finish. It has a pleasant, clean scent. Good luck! (04/08/2008)

Dog Odors in a Basement

You can try sprinkling the area with a liberal amount of baking soda and letting it sit overnight. Then vacuum or sweep the next day. Follow that with 2 cups of white vinegar mixed with 1 gallon of water. Mop the floor, then rinse.

A second or third round of treatment may be required if it's really bad. But I had good luck with this. (04/08/2008)

By Matoaka

Dog Odors in a Basement

Put a few sheets of foil or newspaper down with charcoal briquettes laid out on it. Better yet, smash up the charcoal (outside) down to marble-size chunks first. (04/12/2008)

By kimhis

Dog Odors in a Basement

Try spreading coffee grounds on the floor. Fresh grounds, not used. We had a problem with cat odor and it helped a lot. Leave it there as long as it takes. (04/13/2008)

By kflocey

Dog Odors in a Basement

I have a dog that sometimes makes a mess in the basement on the concrete floors. When this happens, I wash the floor with bleach and hot water. Smell is gone and the floor is nice and clean.

Karyn (04/15/2008)

By Karyn01

Comment Was this helpful? 1
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