Linda, that was a nice neighbor.
The more I think about this septic business, the more I wonder how important the bleach is. If you were peeing the stuff into a municipal sewer system, of course you'd want to kill the bacteria before flushing it. With the septic, it's just going to leach into our backyard. If it kills some russian thistle tumbleweeds, I'm all for it! We are nowhere close to anyone's water supply, so any bacteria that might still be alive, assuming it lives through the freezing temps this winter, isn't going to end up coming out of someone's tap.
I'm thinking about two options:
1. Pee out behind the shed in the backyard. (Seriously, an anesthesiologist friend recommended this.)
2. Pee in the same toilet without flushing until the recommended time is over, then pour the 2 cups of bleach in one time only and flush.
Option three would be to skip the BCG altogether, but I don't think that's viable.