Raw Sewage treatment

[Fred Ramos]

Am currently rehabbing a house and can hear the water gushing under the house (Crawl Space) when toilet is flushed. I'll be cutting into the floor and fear that there may be raw sewage under the house (the leak wasn't the first hint!). I've heard of and actually used a product on this in the past but too long ago to remember what it was (Maybe Lime). anyway, if any of you all know of what I can spread over this stuff it would be greatly appreciated.

Thanks,