What are the basic halachic requirements for Pesach cleaning?👀

What are some of the basic requirements for  cleaning your house for Pesach? So, first of all,   we have to know what we're looking for when  we're cleaning. We're looking for items that are   still edible, even if they're very small, such as  Cheerios. That's what we're looking for. Crumbs,   we say that those are called perurim, and they're  "lo chashivi," they're battle (nullified), so   really, one doesn't have to search for  them. However, the general custom is   that we do. The minhag is that we clean every  surface that we can. The main halacha is to be   searching for edible pieces of chametz such as  we mentioned even small ones such as Cheerios   or pretzels. If there is chametz that is stuck  on toys, a child might put that in their mouth   on Pesach, so those too should be checked  through. Some people will put away the toys,   have special toys for Pesach. Some people will  scrub them or clean them. If there's any surfaces   where people are going to be using food, those  need to be not just search for chametz, but they   need to be cleaned. So any counters, in the  pantry, refrigerator, those areas need to be   sprayed down so that in case there is some crumb  that remains there, it would become ruined by the   detergent that you spray on it. Any place where  a person might leave chametz has to be checked,   coat pockets, drawers, if their little children  in the house, then chametz could be anywhere.   The rule is you do not have to move very heavy  pieces of furniture. But let's say your sofa,   might vacuum under things, might get moved around.  You need to push that aside. You need to take out   the cushions to search in them for any chametz.  The general minhag is that we vacuum and we scrub,   we sweep every area of the house. The  car should be done as well. Car seats,   those are notorious for having chametz. Any place  where you might have chametz needs to be checked.