I use dust extracted chopped straw as a floor litter adding in a handful of chopped hemp underneath the straw in any regular wet corners for extra absorbency. Straw is not very absorbent and the urine is absorbed by the underlying newspaper leaving the straw dry underfoot. Bedding made from cellulose fibres such as Carefresh and Littersoft makes a more expensive floor litter but is light and very hygienic. Clean out regularly to avoid fly infestation, eye and respiratory problems. Use a disinfectant cleaner like Trigene.
Disinfectants alone leave behind debris which quickly becomes a potential source of infection.
Galen's Insect Repellent Hutch Spray is very effective when used around the hutch and under bedding. Hay and fresh water should be available at all times and in very hot weather I give water bowls in addition to dripper bottles. Lops in particular like to cool off by lying with one ear in the bowl. Do change the water frequently though and avoid bowls where there are baby guinea pigs as they can drown. Hay racks help prevent waste and soiling but watch out that babies and rabbit legs don't get caught up in them.