"if you pee on sawdust, aren't you just adding more volume to your pile but not doing anything to effect the piles current c:h ratio? I want the nitrogen to counter the excess carbon already in my pile (lots of chopped leaves)." Then pee directly on the pile. Or collect it in a bucket and pour. Your situation is very different from the one the OP has. Other than your post and this one, all the responses address the problem faced by the OP. Since your situation is so different, if you have a question about it, I would suggest creating a new thread.

"It is a newly built house, so everything had to pass code." David is absolutely correct on that point, however not all codes are created equal. If your local code is based upon the "UPC" (Uniform Plumbing Code) all vents must terminate through the roof, on the other hand, if your local code is modeled after the "IRC" (International Residential Code) all structures are required to have one "Main Vent" which must run undiminished in size from the "House Main Drain" through the roof. After that is achieved any additional auxiliary vents may be reduced to 1/2 the diameter of the line they serve providing the vent is no less than 1-1/4" and auxiliary vents may terminate through the roof, in the attic space, through the wall under certain limitations or they may use an unlimited number of AAV (air admittance valves, commonly called Studor vents). If you are under the IRC, the next time you smell the odor in the bathroom or bedroom poke your head up into the attic space and see if you smell it there also. If so, you may have a vent terminated in your attic space, and understanding the some of the gases in sewer gas are heavier than air, it would stand firm that the gases being released into the attic space are permeating down through your ceiling materials and into the living space. The permanent solution would be to have that vent extended through the roof.

any ideas what could cause this, other than the grossly unthinkable??? Back in the day when I had my silk floral business I hit up all kinds of wholesalers. One happened to be only a short drive from me. So I checked it out. I went inside, only because I had to see what was inside these disgusting buildings I saw. Located next to an industrial park. A small house in front, completely vacant (and subsequently condemned). 3 long, low metal buildings. All rusty. Enter the 'main showroom' and you are in a big old warehouse. Office at the front. Freezing cold, poor secretary had a portable furnace running and her winter coat on while working. Run by a very nice little oriental man. Displays in front, boxes upon boxes all down the aisles in the back. Dark, wet (roof leaked in several spots and I stepped around puddles on the floor). I heard 'scurrying' noises at the far back (very dark) and it was too big for a mouse, didn't see any rats but were convinced it was primo real estate for them. Two cats wandered around (one I discovered laying on a box of silks, box was open). To keep mice, etc. in check I suppose. Many boxes were damp with water stains from the leaking roof. Everything smelled dank and mildewy. The real kicker? This guy had a whopping business going, apparently. Walk-in and mail order (where customers could not see his location). As I was there another wholesaler purchased a large quantity of silks for a wedding (cringe). And I overheard a conversation between owner and secretary, gist of which was they were preparing a huge shipment of silks to a retailer in the southwest. If only they knew... My point is, the stuff is imported. Some of it handled with great care, some of it not. But it's really hard to tell what it's been exposed to in transit or in storage. I was shocked at that place, that's for sure. :/

We used Nature's Miracle for the dog urine residue in our current home. The previous occupants left the carpet in and had 5 dogs, two of which never went outside. Couple that with leaks in the basement windows and completely full gutters, the basement was a HUGE mess. Hazmat gear to remove carpet/pad and three gallons of Nature's Miracle and zero odor---and no biological hazard since the product chemically changes the urine/etc. For a plywood floor, just apply enough to leave the surface wet and let dry. On our upstairs(hardboard over subfloor), we used a string mop to literally slosh on the product and let dry for two days. Then installed hard maple flooring over 15# builders felt underlayment and rosin paper. Almost ten years later, still zero odor/etc. problems.