DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Pest Control > Trying to figure out where dead animal smell is coming from.




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Old 04-17-2014, 01:32 PM  
zebrafish
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Default Trying to figure out where dead animal smell is coming from.

Hi all,

The dead animal smell seems to be situated under the sink in the bathroom, as near as I can tell. The thing is, running water dissipates the smell within minutes, and it stays dissipated for many hours. After everyone showers in the morning, it's gone, but the smell slowly starts to come back during the day.

It's the worst at night, when there's no water running, and is at its worst about 6 am.

I find if I pour bleach down the drains later on, that works for a while.
And I make sure to go in there a could of times during the night to pour bleach down the drains. But the smell is still pretty bad around 6 am.
And then it dissipates as soon as I run the water.

Does it seem like there's a dead animal in the plumbing? The thing is,
there are no problems with water backing up, at all.

I'm trying to figure it out.....



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Old 04-17-2014, 01:55 PM  
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The problem is likely with the vent on the roof. It allows air in the system, with out the air the water in the trap will syphon out and allow sewer gas into the house, dangerous. Until you have this figured out, I would leave taps dripping a little after you have used them and make sure there is water in the trap before you turn it off.



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Old 04-17-2014, 03:41 PM  
Wuzzat?
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It could be a dead animal in your drain, probably a rat who came from the other direction. Force hot water under pressure down the drain from your water heater drain until it runs cold.

If he's in the vent, same procedure.

You want high GPM in any case.

You can't search smells on the Internet,
http://www.google.com/search?client=safari&rls=en&q=decomposition+methan e+smell&ie=UTF-8&oe=UTF-8
not yet, anyway.

http://www.techletter.com/Archive/Technical%20Articles/smellofdeath.html

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Old 04-17-2014, 05:10 PM  
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Wuzzat, how would I force hot water under pressure down the drain?

What is high GPM?

Sorry, I'm not very knowledgable about home repair.

Neal, so it sounds like something is blocking the vent?
What is the trap?

Thanks!

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Old 04-17-2014, 05:22 PM  
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This should help.
http://plumbing.about.com/od/drains/a/Drain-Trap-What-Is-The-Purpose-Of-A-Drain-Trap.htm

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Old 04-17-2014, 06:14 PM  
Wuzzat?
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Quote:
Originally Posted by zebrafish View Post
Wuzzat, how would I force hot water under pressure down the drain?

What is high GPM?

Sorry, I'm not very knowledgable about home repair.

Neal, so it sounds like something is blocking the vent?
What is the trap?

Thanks!
Run a garden hose from a faucet to the drain, pack rags around the hose nozzle to act as a gasket, and with a helper, turn it on full blast.
GPM is gallons per minute. You might get 6 GPM from a faucet if you have city water.

Just do it for 30 seconds or so at first to make sure water is not coming up out of another drain. This could happen depending on where and what is causing this.
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Old 04-17-2014, 06:42 PM  
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Quote:
Originally Posted by Wuzzat? View Post
Run a garden hose from a faucet to the drain, pack rags around the hose nozzle to act as a gasket, and with a helper, turn it on full blast.
GPM is gallons per minute. You might get 6 GPM from a faucet if you have city water.

Just do it for 30 seconds or so at first to make sure water is not coming up out of another drain. This could happen depending on where and what is causing this.
Won't work, you would have to plug the drain further down the system and fill the pipe all the way to the roof while holding water from coming out of every drain in the house and then add pressure.
When you try this have the wife film it..
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Old 04-18-2014, 10:59 AM  
Wuzzat?
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The last time I did it I had to plug the roof vent with a little inflatable barrel-shaped stopper that had a Shrader valve on it.

It depends on how much pressure you need. 10' of water column in the vent pipe gives you ~5 PSI and the moving water gives you some more force.

Try it.

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Old 04-19-2014, 10:38 AM  
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Well, if I pour bleach and also keep the water running a little, that does seem to control the smell much better.

Thanks everyone.

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Old 04-19-2014, 03:53 PM  
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We pay $1 per 100 gallons for city water.

I guess you could gamble some and run water into this drain for a few hours at a high flow rate and see if that makes the smell go away permanently.

Your water meter will tell you how much debt you've accrued and a few mornings at 6 AM will tell you if it worked.



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