This usually sells for $20+, pretty sure this is a price mistake. Sucks that its an add-on item!
Nature's Miracle Intense Defies formula combines breakthrough odor control technology with the intense performance of bentonite to maximize litter pan odor protection
• Ideal for high traffic and multi-cat litter boxes
• Reduces territorial odors
• Fights ammonia, urine & feces odors
• Packagining may vary