A concentrated foam liquid to be used in suitably equipped booms, wipers and other application equipment to identify spay swath width for pasture, turf, crops and direct drilling. The long lasting foam enables better chemical application by assisting with precision placement of spray runs. Avoid spray misses and ensure complete coverage whilst avoiding costly run overlaps. Particularly useful when spraying pre-dawn or early twilight as the foam reflects headlights. Our Marker Foam has proven itself over many years use, to be highly reliable, stable and long lasting on the ground and the high adhesive factor resists wind movement on plants or bare ground. To use mix one litre of foam concentrate in 100 litres of very clean water (preferably rain water). With a suitable foam generator, ground speeds up to 20kph are still effective.