I think it is a little like the theory of natural chickens - you can bleach the coop weekly, remove that poop the minute it drops, sanitize the waterers, and then....your chickens have no built up immunities and can get very ill. Or....you can expose them to good and bad bacteria (putting that plug of grass into the brooder, etc) and let them build up the immune system.
People, same thing. Yes, your chickens and you can become deathly ill with some of the very lethal bacterial infections out there, no question about it. Hence some of the infectious stuff that goes on in hospitals. I am not saying practice no hygiene at all - but for people and chickens, too much can be a bad bad thing. A little dirt, good.
So cleaning up feces of your dogs? sure, wash your hands. good soap and water does wonders if you know how to use them properly.
Alcohol will kill some things, but it is not an EPA approved hospital grade disinfectant, which will kill the big bad bugs. So for example, your nail tech at a nail salon can't use alcohol to disinfect the nail tools, because it isn't strong enough.
Having said that, I still would prefer the darned chickens drank from the waterers, not the filthy pools of melting snow mixed with chicken poop!