Top Performance Pet Professional Mixing Shampoos, 32-Ounce Bottle These bottles make diluting and mixing pet shampoos or solutions fast and easy Each bottle is imprinted with graduated fill lines marked with common dilution rates from 1:1 to 20:1 Fill with warm water to the appropriate dilution rate line and add concentrate to the fill line, then shake or tip the bottle to mix and youre ready to go! Includes either a pop top or a flip top, depending on available selection