Hard-to-reach Chametz

Hi,

If Chametz is located in hard-to-reach crevices (such as floorboards or carpets), it is generally considered insignificant and one's ownership may simply be annulled with the pre-Passover "annulment of Chametz" declaration, and the Chametz may be ignored. One need not clean it out and destroy it.

However, if the Chametz will come into contact with food then one must either get rid of that Chametz or coat it with something inedible which will prevent it from entering food.

(Code of Jewish Law, Orach Chaim 442:11)

Have a great day,
Mordechai