Regarding the removal of Chametz from our homes, there are varying opinions. It is always a good idea to start with what is forbidden from the Torah, and then move on to the Rabbis.
The Torah forbids what we refer to as בל יראה and בל ימצא, you shall not see and you shall not find. These are two separate prohibitions.
The Torah’s method for removal of חמץ, is simply, ביטול, or nullification.
This involves the ביטול declaration that you are relinquishing ownership of your חמץ and you are making it ownerless like the dust of the earth. This technically means that you do not own any Chametz.
It is the Rabbis who require the actual removal and the checking of the entire house for Chametz. And after all of this, we do בדיקת חמץ the night before Pesach.
We must not forget the symbolism of all of this. Chametz represents haughtiness and our negative personality flaws. This is what we really should concentrate on getting rid of during this Pesach season.