We discuss cases where a certain quantity of Chametz was put out but a different quantity was found.

The Mishna Berurah gives a hack to help in one of these cases involving the rodent possibly entering into a house checked for Chametz.

We discuss additional cases with the rodent brining Chametz into the checked home and whether or not additional checking is required.

We discuss whether we can be lenient when we know a rodent took Chametz into a checked house, but we're unsure which one.

We introduce multiple cases where rodents may bring Chametz into a checked house.

We explain when we would argue that we can rely on a majority in the case of our rodent taking Chametz into a checked home.

The Rama discusses the case of the rodent going into the checked house but adds a wrinkle and a leniency.

We discuss a case where a rodent removes something from piles of Chametz and Matzah, with a majority of Matzah, and then brings it into a checked home.

We discuss the case of Chametz found low down in a cistern or a pit.

We discuss the need to climb a ladder to remove Chametz found high up on a beam.