Beaphar odorkiller Odorkiller is quick and easy to use. It's a fast acting odor remover for eliminating even the most pungent odors.  It leaves the litterpan area in your home odor free. Simply shake beaphar odorkiller over the fresh litter to stop odors before they form, or shake on litter for use as an odor controller. Odorkiller is complete natural & 100 % safe. For every ferret once a week (2 ferrets= 2 x in a week) a tablespoon odorkiller over the fresh litter.