Mini-Hemp Hemp litter is used to cover floors of cages for pets such as rabbits, guinea-pigs and birds. It is made from the delicate woody core of fibre hemp. Mini-Hemp provides a hygienic and comfortable pet habitat and it is perfect for the cat box too.Due to hemp wood’s natural spongelike quality, moisture and odours are easily soaked up. Ammonia in particular is bound and absorbed by hemp litter. Mini-Hemp is user friendly and can stay put for longer periods than other pet litters.