Q: How can I stop my dog from eating cat poop?
A: ClickerExpo typically features a panel discussion on Saturday afternoon, with six of the nation's top clicker experts, trainers, and scientists. Attendees submit questions in advance. And what does someone ALWAYS want to know, from this group of brainy trainers? How to keep the dogs out of the cat's litter box. Oh please.
This is not a training question. Dogs like to raid the litter box because cat feces often contain a lot of undigested food that dogs can utilize. People hate dogs to do this because a) it is distasteful and b) it gives dogs terribly bad breath.
If you have cats and dogs in the same house, and the cats are provided with litter boxes, then the litter boxes must be located in areas where the dogs cannot get at them. That's it. That's the only answer. Personally, I use a covered litter box and set it in a closet that is always open (so the cat can get in) but inside a fairly tight circle of chicken wire. The cat easily jumps over the wire to get to the entrance but the dogs can't. End of problem.