Plenty is written about dish soap, particularly Dawn Dish soap, for use in flea traps.  checking into ingredients on the dish soap on its website, a long list is provided, with ingredients used to lessen grease, etc.  It seemed perhaps 30% only were surfactants.  Dove no fragrance or gentle bar soap is about 50% surfactants, since it doesn't need to deal with grease and other stuff found on dishes and pans. It lowers surface tension by 2/3rds. Wikipedia has a lot of info on surfactants, and how they lower surface tension of water., and on insect exoskeletons That's why the flea traps work, the exoskeletons on the fleas are no longer intact after contacting the diluted dish soap, and they drown.

True, works better than other methods. As you no doubt are aware animals infested with fleas fortunate enough to get good Veterinary Care will be provided with insecticide and insect growth regulators with luck take care of the problem. Unfortunately for me and others we Are The Host and there are no veterinarians or medical doctors who will treat people with Veterinary diseases. People should be made aware that this can happen through contact with pets. Anything that you can do to publicize this please do.