Sellout.woot! has the 4oz Martin’s Insect Growth Regulator Concentrate for $13.97 with free shipping for Amazon Prime members or $6 shipping.

• Provides effective long-term control of Fleas, Roaches, Flies, Mosquitoes, Gnats, Crickets, Litter Beetles & Ants, for use on Furniture, Animal Quarters, Carpets, Kennels, Poultry Houses.
• $21 at Amazon