ANY dishsoap will work. Fleas will die in dishsoap and water. Another good tip would be to buy a fleacomb, if the flea situation is REALLY bad. It comes with small bristles (you can also use it to touch up your yorkie's face) that actually "catches" the fleas in between the bristles. They tell you to comb with a cup of water and dishsoap so you can dip the comb if you catch one of those buggers! You will see it scrambling and eventually floating to the bottom-dead. Another more natural way to temporarily shock the fleas is iced water. My friend found this out by accident!! So once you catch a flea, either by hand (pinching method) or by combing, you dip it into the iced water, where it will freeze. Once you are finished, flush the entire contents of the water down the toilet and voila! you're done! Hope this helps!! I am a Flea Master in Training... my friend is so good he squeezes the fleas dead between opposing nails as he catches 'em and then rounds up all the dead fleas later!!!

BOw to the flea master!!!!