Check the listing for details. MGK NyGuard® IGR Concentrate | 480ml. Color: Clear, Condition: New. Listed at 171.39 USD. NyGuard® IGR Concentrate treats more places including indoors and outdoors saving you time. As a juvenile hormone mimic, it breaks the life cycle of more than 50 pests, including cockroaches, fleas, mosquitoes, ants and flies. As well as killing pests, NyGuard® IGR saves you money by providing more output per bottle. NyGuard® IGR Concentrate is so versatile it gives you the power of more.NyGuard® IGR Concentrate treats more places including indoors and outdoors saving you time. As a juvenile hormone mimic, it breaks the life cycle of more than 50 pests, including cockroaches, fleas, mosquitoes, ants and flies. As well as killing pests, NyGuard® IGR saves you money by providing more output per bottle. NyGuard® IGR Concentrate is so versatile it gives you the power of more.