Sorry,I can't answer your question.I've never dealt with any of this.
As for the milk,please stop giving it to your cat.
I've never given my cats milk.Not even my kitten.What I do give them is a milk suplement.It's not milk at all.But my Casper loves it.
If your cat is lactose intolerent,then definately no milk.Casper got a hold of some milk and had the runs.
You can give a bit of milk as a treat.Once in a while.That's if the cat is not lactose intolerent.