The polymers help introducing HYDROSOL to the closest of the root mass, thereby increasing the effectiveness of the product, irrigation and maintaining the water in the soil. 
A machine using a high pressure system to easily inject granules up to 20 cm underneath which is safe for the environment and without damaging turf. 
An underground injection system particularly suited for grassed sports fields, golf, parks, municipal gardens, landscaped sites, residential sites, commercial sites or industrial sites...