Materials

Used 18L clear plastic water bottle

• Large Mylar helium balloon

Plastic water bottle cap (with the “no-spill”

insert-see photo)

• Copper tubing (40 cm long, 6.5mm (1/4”)

inside diameter)

• T-connector for plastic tubing (barbed, 6mm or

¼” long)

• 1 cork (tapered, 23mm long)

• Clear vinyl tubing (1.5 m long, 4mm or ¼-inch

inside diameter)

• 2 barb fittings (¼” x ¼”)

• Ball valve (1/4”)

• 6-8L manure pellets (goat, sheep, llama, rabbit,

or other ruminant)

• Rubber gloves

• Large plastic funnel (can be made from a 4L

plastic milk jug with bottom removed)

• Wooden dowelling or stick (30 to 50 cm long,

2-3 cm thick)