Quote:It goes systemically through the skin. It kills fleas when they bite the dog and also sterilizes them so their eggs will not hatch. You really should not use this on your kids.....no telling what problems it will cause later in life. Some say no egg withdrawal...some say yes. I usually spray when moulting in the fall...and then again in the spring time. ONLY one squirt per bird on the neck...I do throw out the eggs for appx 1 week and then back to normal. Just for measure... Although I'm sure it 'could' be used on humans...I'd check into it with your vet or pediatrician before trying it out first.