Ok. Clear on the bleach=chlorine thing. Many Thanks!!

I googled Baquacil and I see nothing around this house that leads me to believe she used that.

I have infront of me

Pool Frog Bac Pac - She left a ton of these. Active ingredient is 99% Trichloro-s-Triazinetrione with available chlorine listed as 89%.

hth Liquid Chlorinator - She left 2 jugs of this. Active ingredient is 10% Sodium Hypochlorite..

Does this help?

Thanks to everyone who replying...it is very appriciated.

The Cheeseheads