Looking for answer that is scientific in nature and not just an opinion.
When using dial (on my cat) it helps kill the fleas, sometimes better than even cheap flea-shampoos do. But like those cheap shampoos, does it or does it not kill all 4 stages in a flea's life cycle (ex. some shampoos don't kill eggs)??
Question 2 is using dial first before a store-bought, flea-shampoos does it cover say the eggs with a layer that the flea-shampoo doesn't penetrate to kill the egg??