SKI Innovations Paw Boss Wash for Dogs Soap & soak every paw with fresh clean soapy without going back and forth to the sink Wash opening is 3.5" diameter at 2.25" max deep with soft/flexible finger-like cleaning pad in cup Proven (with the use of antibacterial soap) to remove 99.5% of the bacteria and 99.9% of the fungi Very pet friendly (non-invasive) & gentle on those paws Built-in clean & dirty water reservoirs allowing you to wash up 4-8 paws on one filling