He specifically had me use calcium carbonate as opposed to other calciums. Maybe the other componants in common garden lime are the offenders, like magnesium.
Never heard that about clorox and pee. What does it do? Explode? I knew clorox and ammonium was a no-no. I saw someone do that once. The fumes were pretty toxic.
Pee contains ammonia and if mixed with Clorox will produce those same fumes - chlorine gas is among those fumes.