Lime will cut down on smell. It is best to use IMO when the dirt is loose. Remove the dog sprinkle and work into the soil. Then you can put the dog back, it doesn't last super long though. Luckily where I live now there is lots of ventilation, as the dogyard sets up higher than surrounding land. I rarely have any smell at all, well except for those few males who continually piss on all their furniture!

Those trouble areas you mentioned, do they get good air flow?

S_B