Yeast is everywhere. It floats around in the air. So how can we get it all out of our houses before the first day of Unleavened Bread starts?

The truth is, you can't.

You do what you can and ask God to reveal the hidden leaven in your house/life. Get the obvious stuff first. Remove the leavened bread (chametz) first, then anything containing yeast + grain. Then start at the top of the house and work your way down, shining a light into every dark corner.
#passover