Update, was: please help with dosages ... what could be killing them?

Thanks for sanity check. Went to co-op, this is what they gave us. Obviously they are not chicken experts. Rooster booster is Vitamins & Electrolytes with lactobacillus. This is what I thought that y'all had told us to dose them up with.

First chicken was kinda droopy and staggering around a bit. Then she fell over in the dirt, wouldn't get up, and had diahhrea. I posted about that a while back. The recommendation was to isolate her and give her powdered milk (?).

The second chicken just dropped dead with no warning and no visible symptoms. the others are ok.

We are concerned that they were suffering from Seattle weather -- just being too wet. So we just loaded up their cage with fresh mulch to raise them out of the muck. They have a coop, a big covered area, a pond, and a large yard, which was very soggy and is now much better. We're planning to move them to a much dryer area.

Any thoughts on the mortality? I don't know if we have the Buff Orp that just died, or if she went out in Friday's garbage.

Feeling stupid for buying expensive meds that may not be what we need. but I think the electrolytes are probably good to have on hand.

tx for advice...

Clueless in Seattle.
Down to 6 chicks and 2 ducks...