I defrosted my upright freezer yesterday. It took from 10 a.m. until 3 a.m. Yes, I was up until 3 a.m. defrosting my freezer. That's either crazy...or it's crazy. By 2, I resorted to pouring hot water on the inches of frost. Worked great!
I've reclaimed an entire shelf in the freezer. And, I tossed two sacks of ancient food items that will never be eaten by anyone except bacteria in the giant municipal compost heap. There's plenty of space now, so like is with like--meat all together in the bottom, convenience dinner items together, etc.