Slurry from dairy cattle manure after bio-digestion always tends to be very liquid. Liquid bio-slurry is often difficult to apply on small scale farms, especially when the spreading area is not close to the farm. Costa Rican dairy farmer Carlos Gomez and his daughter Karla in the highlands of Turrialba came up with a simple and effective solution. “We let gravity do the job!” They fertilise the hilly pastures using garden hoses; downhill simply by gravity; uphill by pumping it up first. The biogas is used for household cooking and in the small milk processing unit for local cheese production.