4 oz. Odor Neutralizing Mineral Rock Crystals – Citrus Blend: A blend of Orange, Lemongrass & Peppermint Oils, Extreme odor eliminating crystals blended with odor removing enzymes. Safely neutralizes unwanted odors using a blend of natural odor eliminating oils. Odors are removed from the air and will leave area smelling fresh and clean. Use these crystals in kitty litter box, in the kitchen and car. ECO-Tip: Freshen up with Odor Neutralizing Room Spray after crystals lose their scent instead of throwing away.