OHP will always seek to be the primary source of value added pest control solutions to the greenhouse and nursery production industry. OHP will intimately understand the needs of growers, develop a focused combination of pest control products and services to meet key needs and develop the most effective market support infrastructure in the industry. By implementing this vision we will provide a mutually profitable relationship with market partners and our ultimate customer, the grower.
source: ohp.com
We use their herbicides.