QTY DISCOUNTS APPLY Pyranha 1-10 HPS Concentrate - 2.5 Gal. Refill for 30 Gallon Systems. 0.30% Pyrethrins. Add contents of entire container to drum and fill with water. 1-10 HPS Concentrated System Refills: Are insecticide refills for 30-gallon automatic spray systems. Developed over 30 years ago using the highest quality pyrethroids, HPS is a premium formulation that has set the bar for effective automatic flying insect control in horse barns. It provides both quick knockdown and long lasting protection against a broad range of harmful biting insects that include: Horn Flies, Deer Flies, Stable Flies, Boot Flies, Face Flies, Midges, Mosquitoes and more. May be mixed with ODAWAY to eliminate odors. NO MAIL DELIVERY ON THIS PRODUCT. UPS/FED EX ONLY!