Pyranha Stock Guard only kills those insects that are out in the open and come into contact with it at the time it is being applied. There is no residual kill, but it can potentially make an area slightly repellent for 2-3 days after an application. We do not find any reference to newly hatched eggs on the product label, so you may wish to contact the manufacturer Pyranha with specific application questions directly at 1-800-231-2966, or via their contact page here.
Pyranha Stock Guard may be used on dogs over 12 weeks of age as well as dairy and beef cattle, sheep, goats, swine, horses, and poultry if used as directed per page 2 of the product label.
