I would do a search on cholorohexadine as I have seen a lot of people swear by it on here.
I'm using a product called "Vetaclean" at the moment but used to just use a weak solution of bleach and water.
I think a 1:1 solution of vinegar would result in your rack stinking like a chip shop (google it ) for ages and I don't think that would be good for the animals.
dr del
cholorohexadine Is what I use, just dilute it with water and your good to go.