Baking soda is the best I used it on the Beardies beards.
The other thing you could try in keeping his skirt in heavy mink oil
As for that lazy Rough make her eat off a stand it’s really bad for her to eat like that she is a deep chested breed so think bloat, not common in roughs but she is the first I have known to lay down and eat unless it’s bones,but as they are more nibbling bones they go down slower so therfore cause no problems.
As for Fairy I would never use it as it’s a degreaser so will strip all the oil out of the coat this will leave the coat with no protection at all.
I do know poodle people that use it as a dog shampoo for shows but they are taking those dogs home and putting them in oil between shows