Helps conceal unpleasant pet smells in your home. Signature Arm & Hammer baking soda and essential oils help deodorize litter odors. Simply sprinkle the dissolvable crystals over cat litter for a pleasant scent boost. Crystals dissolve over time, leaving behind zero mess. Restoring scents are designed to help ease your fur-iends stress. The blend of baking soda and essential oils helps to neutralize odors and freshen the litter box. The crystals are easy to use and dissolve quickly, leaving behind no residue. Plus, the calming scents of the crystals are designed to help reduce stress in kitties.