I did quite a bit of research on it this year. That hypercleaining seems to be more rooted in Jewish tradition than anything else. The intent of course is good, to equate the physical action of cleaning out all the leaven with sin, but I think the intent of the commandment is that we don't ingest leavening. I don't think anyone is going to eat the little dust crumbs they find on the floor. :-).
What we do is to take all the food we find that has leavening and take it down to the Salvation Army kitchen and then we don't eat leavening for a week.
It's pretty easy this year since both my wife and I are on the atkins diet and have pretty much avoided bread for the last month or so.
Good luck, I went on that diet years ago and it worked.
If you get the urge to eat some real tasty unleavened bread, here's a killer.
Make up any receipt of bread dough with out the leavening.
Use a deep fryer, and when it's ready, pull off pieces of the dough, roll them in your hands until round, or put them in the shape they are in when you pull them off.
When their golden brown, Oh my, wait, I'll be back in a minute.........................................................................................................................................................................................shucks, Ginny said no!, it's too late to keep the Days of Unleavened Bread and Chili.
Oh well, maybe next year, Lol
JH