More ferals at my door/Diarrhea

I'm not sure what's going on lately but two more feral kittens showed up at my door tonight and they both look very sickly and have severe diarrhea.
I can't get them to the vet until at least 20 hours from now, any advice to get us through the night?
I gave them pedialyte with a syringe (three full syringes to each kitten) and also gave them 1cc metronizadol, which I know is good for diarrehea in animals.
Anyone else has any advice please?
Also they poop very liquid and it's left some wet spot on my jogging pants and shirt while I fed them, are there any special measures I should take? (besides bathing of course)

I'm sorry I didn't see this post earlier, but other than keeping them hydrated, I don't have much in the way of advice. As to the soiled clothes, I would use an enzyme cleaner to treat the spots first, then wash them.

for the babies, and thank you for helping them!!!!!!!!!!!!

Laurie