Would depend on how picky your dog is. My Indigo would wolf down anything without chewing so we can hide meds wrapped in cheese. Our Nala is very picky so we would have to push them down her throat (not something I like to do). Since you are feeding hamburg, maybe you can hide them in a little ball of raw hamburg? I know there are some treats you can buy specifically for hiding treats (they are hollowed out). I looked at them but they have too many things in them that we have taken out of our dogs diets. We have also coated pills in peanut butter, some people use cream cheese. Lots of ways to go.
Also, for more information on treatments, etc., look on the last page of this category for the Canine Bladder thread (nearly 700 posts). Lots of good info.
Good luck,
Connie