Synergy Dental Fresh Original Formula Water Additive for Dogs, 8 fl.oz. Dental Fresh Original Formula for Dogs is the &ldquo;world&rsquo;s first and only clinically proven toothbrush in a bottle.&rdquo; Safe and beneficial for every-day use for both dogs and cats, too! CLINICALLY PROVEN BENEFITS: Anti-microbial formula activates, releases and destroys bad breath causing germs &amp; bacteria microorganisms when exposed to periodontal pathogens &amp; acidic areas where plaque has formed. Eliminates dental plaque-causing bacteria and volatile, malodorous sulfur compounds. Whitens teeth over time with proper use. Strengthens teeth by restoring enamel. Protects gums and helps to prevent and/or treat gingivitis. Instantly freshens breath &amp; eliminates slime (bacteria) in the water bowl. Improves oral health. Eliminates plaque &amp; tartar. Safely helps fight periodontal disease without brushing and no adverse effects on periodontal tissues.