Save valuable time and money with Blu-Mark, a specially formulated solution designed to show you exactly where you’ve already sprayed. This container of blue-colored liquid indicates wherever you’ve already applied chemical sprays. Perfect for large lawns, golf courses, and athletic fields, it works in sync with a variety of pesticides, fertilizers, and herbicides so you can be sure you’re not spraying over an area you’ve already applied material. Dimensions: 2W x 7D x 5H in.. Constructed of plastic. Attractive white finish. Shows where sprayed. Eliminates waste and indicates drift. Non-toxic and dissipates with sunlight.