I nested for at least a month before all four of my kids. It was all different types of things too!
With my eldest son (now 4yrs), everything had be soaked in napisan...and I mean EVERYTHING!
with my daughter (now 3yrs), I became addicted to using Jiff
with my middle son (now 2yrs), I swept all day
With my youngest son, we had already bought a cleaning business, and I worked up until the day before he was born...so all my clients benefited from my nesting! lol