My rabbits have always spent the daylight hours out on grass, but we are having to give it a rest..feed and fertilise, and reseeding some areas as we've moved the vegetable garden. This means that their big runs will have to be moved onto the patio areas for several weeks ...so that it can recover, and to be sure that all the chemicals have dissipated. I've bought some readigrass, but am unsure how much they should be given...