You will receive the small bottle, NOT the green jug. Rebottled into a smaller size. 10ml will make one gallon, or four 1-quart treatments. This is a great size if you have a small to medium flock, and need multiple treatments that include spraying a larger coop. If you're spraying the chickens only and not the coop, 10ml will treat several dozen chickens. 2.5ml is perfect if you only need one treatment, as a sample, or if you have a very small flock. 2.5ml bottle of concentrate, when mixed with water, will make one 1-quart treatment, or four 1-cup treatments. A copy of the product info/instructions is included. 2.5ml is packaged in a glass vial with plastic lid. 10ml is packaged in a recyclable plastic squeeze bottle. Shipped in a 100% recycled cardboard box. Mixing guide included. If you have any questions, please do not hesitate to ask, and thanks for looking!