nope i dont use any kind of soep on them at all, too afraid it will dry out thher feathers, i fill the sink up with warm pour maybe give or take a qurter of th ebottle into the water anf just dunk them in make sure all there feathers are wet and clean from residue u know poop and dust lol, and...
Apple cider viiger is also great to bath the chikens in, you put 1 part acv mix with a sink full of warm water, its great for there feathers makes them soft and shiny, thats what i use for bathing my birds. You can see how his feathers look very shiny. I use this for all my birds. AND its great...