PRODUCT DESCRIPTION:   Odorless liquid which is added to your tank mix for “egg killing” insect control. Although it will do nothing to adult pests, it will sterilize insect eggs and larva so they’re unable to develop into adults thus breaking their life cycle. Most commonly used for fleas, gnats, mosquitoes, ants, all kinds … Continue reading NYLAR IGR INSECT GROWTH REGULATOR I.G. NYGUARD