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Old 09-02-2010, 08:04 PM   #1
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Default Forgot to clean out mash tun, how to dispose the mess

Well, I did something really stupid. Last time I brewed, I forgot to throw out the spent grains!

Anyway, I came back to find them moldy, as moist, carbohydrate-laced mixtures are wont to do, and smelling like a landfill. My initial reaction was to cover it in Oxyclean Free and pour hot water on top.

Now the Oxyclean is going to work on eating the mold, and I think the mash tun can be saved. I plan on giving it a few more oxyclean baths and a few thorough rinse. However, I just realized I did this without knowing how to get rid of the Oxyclean-Grain mixture. In retrospect, I should have thrown out the solids first.

It's too wet and heavy to go in the garbage can, and I'd dump it in the woods near my backyard, but I'm worried Oxyclean Free will reap environmental havoc. The MSDS sheet only says that the Oxyclean solution is "not hazardous waste," but that describes a good number of things that I wouldn't want to pour in my backyard!

Any ideas?

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Old 09-02-2010, 08:09 PM   #2
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My brewhouse slop sink drains directly on my yard. Lots of Oxyclean has spilled on there and if anything the grass is probably greener.

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Old 09-02-2010, 10:14 PM   #3
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Well, I followed your advice and dumped it in the back yard. We're due to reseed anyway.

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Old 09-03-2010, 12:18 AM   #4
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You hate the environment. If Al Gore ever gets Saint Peter's job one day, you're definitely going to hell.

(joking, joking...)

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Old 09-03-2010, 12:24 AM   #5
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Leaving spent grain in you mash tun is somthing you will only do once...what a stink to clean!

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Old 09-03-2010, 01:24 AM   #6
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Now it's time to nuke your mash tun with bleach!

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Old 09-03-2010, 01:40 AM   #7
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I think double bath in Oxyclean and a bleach bath followed by several rinses should more than adequate.

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Old 09-03-2010, 02:29 AM   #8
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I did the same thing a couple months ago, and after having the grains sit in there for 5 days i went to clean it out and what a smell it was. I soaked it in oxyclean many times over the next week without any luck. After all that work i figured it would just be easier to get a new cooler. You could try the bleach that others mentioned. Good luck and let us know if you find anything that works.

Chromados

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Old 09-03-2010, 02:49 AM   #9
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Quote:
Originally Posted by chromados View Post
I did the same thing a couple months ago, and after having the grains sit in there for 5 days i went to clean it out and what a smell it was. I soaked it in oxyclean many times over the next week without any luck. After all that work i figured it would just be easier to get a new cooler. You could try the bleach that others mentioned. Good luck and let us know if you find anything that works.

Chromados
Same thing here. Not my mash tun but an ice chest I dumped the grain from my first batch in on a double brew day. Forgot about it for a week. That ice chest is done. repeated bleach/oxy clean can't get rid of the smell.
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Old 09-03-2010, 04:30 AM   #10
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My neighbor won't clean up after her dog so her yard smells like ****. So, I in turn apply a little of my own fertilizer and dump piles of spent grain out in a semi-shaded area right next to her back patio. A LOVELY aroma ensues.

FWIW - we have all forgotten to clean out the tun so no harm done. Some oxiclean and some sani-clean and you are good to go.

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