I have also used the crushed, they aren't picky. I use about a teaspoon full. You can also sprinkle Adolf's meat tenderizer on their food but the generics do not work. If nothing else works, you can purchase Forbid from the vet which is a powder spinkled on their food. Works but is a bit expensive when other things work just as well.
If you use the Adolfs, make sure you get the kind without onion powder-onions are very toxic and can cause Heinz Anemia, which is like IMHA except caused by onions.
I used Forbid when Casey was a puppy, it did make the poo smell worse(if that is possible), but didn't deter him. Only thing that worked for him was immediate cleanup, which I still do.