Gross....
The stuff on "The Money Shot" looks like chewed meat that was just removed from teeth with floss or tooth-picks.

I wonder what my GT looks like after all the Red UV Feser I've put through it....

BTW, I've been following this, but I don't think I've posted yet. I really like your work and all the learning you're sharing!

Your mistake:success rate totally wrecks the curve.

Good luck with your cleaning.