With Deo Pearls from Biokat you can refresh your cat's litter tray at any time. These pearls help prevent bad odors; Absorbs unpleasant odors and helps prevent unpleasant odors. Deo Pearls also strengthen the clumping effect of the litter, so that soiled litter is easier to remove from the litter box. The Biokat's Deo Pearls are available in different fragrances. Deo Pearls by Biokat - Cotton Blossoms: A light and airy scent of freshly laundered clothes thanks to a blend of cotton blossoms and jasmine. Spread Biokat Deo Pearls evenly over the litter in the sandbox.