Tropiclean's Fresh Breath Made Easy Oral Care Water Additive now comes a 32-oz. size, which is offered in addition to the product's 16-oz. size and designed to be perfect for multi-pet households. Formulated to eliminate bad breath for up to 12 hours, the additive also fights germs that cause plaque and gingivitis, the company reports. It is infused with natural aloe and green tea leaf extract, and is virtually taste- and odor-free, the company adds.