(Addison Bio Labs) Maxi/Guard OraZn Pet Oral Care Gel provides natural oral cleansing and instant fresh breath in dogs and cats. Neutralized zinc formula is chlorhexidine free and tasteless. Apply gel directly to the outside gums above the back upper molars. One drop placed on your index finger, swab, or finger brush and applied on each side of the mouth will provide optimum pet acceptance in adult cats. Use slightly more for small dogs. Most medium to large dogs will accept direct application from the built-in applicator tip. A natural cleansing action will distribute the gel to remote areas of the mouth. Does not require rinsing. Use daily for best results.