We had an inspection a few months ago -- but we were away on vacation when the notice came and they arrived and inspected before we got home, so there was no chance for any quick and dirty cleanup or anything. We never heard anything regarding the visit, so we're assuming there was nothing worth mentioning.
Most leases allow for "normal wear and tear" but even if they do say something it's not the end of your lease period, so, in theory, anything noted could be fixed by that time.
ETA: That said, if you already know your landlord or the agency are nitpicky nutbags, then by all means, go all out to make sure it's sparkling upon arrival.