2.5 in. x 18.5 in. Plastic Pesticide Lawn Flags SF-21PS - The Home Depot
Custom Marking Flags - 5″ X 6″ | BMC
Amazon.com: Venicor 2PC Pesticide Sign with Metal Stakes, 12"x9" - Corrugated Plastic - Pesticide Flags for Lawn - Pesticide Application Keep Off : Patio, Lawn & Garden
Amazon.com: ComplianceSigns.com This Area Has Been Treated With Pesticide Please Keep All Pets Off The Grass Thank You Sign, 10x7 inch Plastic for Hazmat : Industrial & Scientific