Net-Tex Scaly Legs 250Ml

Is there an egg withdrawal time with this?

If I use this on my hen, will her legs go back to normal? Her scales are lifted due to the mites

I'm going to be using nettex on 2 starlings that love to bathe. would it be ok to leave bath water down after treatment or should it be pulled?

How many chickens will 250 ml treat?