David,
When I worked for Edson they were marketing a microbial bilge cleaner.  We 
found two things to be true: the microbes needed oxygen to work, as in agitated 
water.  Once the microbes finished feasting on organic matter in the bilge, 
they die, leaving a residual order that was unpleasant.  Bilge water was free 
of oils ,etc but needed to be pumped overboard. The microbial pads had a 
service life of about 1 month once they got active in dirty water.  They would 
not be effective if it froze.
Also, cleaners like bleach, simple green and any emulsifier products would kill 
the microbes, which means the bilge pads wouldn’t do what they were designed to 
do if you mixed bilge cleaners.
Just a bit of insight regarding odors in the bilge.
Chuck Gilchrest 

Sent from my iPhone

> On Mar 15, 2021, at 8:29 AM, David Knecht via CnC-List 
> <cnc-list@cnc-list.com> wrote:
> 
> Thanks for all the thoughts on smelly bilge.  I will add some detergent or 
> bleach when it warms up and leave it there for a while and hope that cleans 
> it out.  As to garboard drains, I have considered it, but the thought of 
> drilling another hole in the bottom of the boat just fills me with dread.  It 
> is not that big a problem to need that solution.  As to dehumidifiers, sounds 
> like a nice idea, but there is no power near the boat where it is stored this 
> winter, so that is not an option.  I doubt it would help given the amount of 
> water that comes down the mast in heavy rains.   Dave
>  
> David Knecht
> S/V Aries
> 1990 C&C 34+
> New London, CT
> 
> <pastedGraphic.tiff>
> 
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> PayPal to send contribution --   https://www.paypal.me/stumurray  Thanks - Stu
Thanks to all of the subscribers that contributed to the list to help with the 
costs involved.  If you want to show your support to the list - use PayPal to 
send contribution --   https://www.paypal.me/stumurray  Thanks - Stu

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