I don't know whether you know this already, but baking soda does work. Just ... it's got a certain smell of its own. I can't quite describe the whiff of baking soda ... it's not exactly pleasant on its own. But it's by far, a better alternative than the present pong the Dexter and Wally been emanating.
I had them sit through a couple sessions of baking soda. First a light dusting. Then, I had a paste made which I marinade them in and let them stew for a bit - (the Furboys were not the least bit amused). Last step was to hose them over. By then, they were really upset. Three marathon showers in three days! Too much!
Determine to defeat the stink, I cornered the shivering pups with tea tree spray. And fumigate with glee! I like the smell. I know for a fact, my four legged charges may beg to differ on that ...
Satisfied with my work, it was my turn for a shower - minus the baking soda! :)