So I have a run that I have extended today since I joined my new run to the old one. So now I have one end with sand and the other with grass. So was thinking, maybe I'll try tilling the soil. How does that work and any smell? I was using sand so one end will be a mix of sand and soil and other end soil. Should I put a roof on my run so soil wont become mud? I think if I I till the soil as of I'm about to make a garden the soil will be healthy and not stinky if I do it once a month at least. What do you think?