This tip may seem counterintuitive but hear me out. If you have a headlight on your vacuum, vacuum your non-carpeted floors at night with the room lights off. You’ll be amazed at what you’ll see (yuck!) but it is so satisfying when you can see you are getting EVERYTHING.
When I first told my husband about it he thought I was crazy. He tried it and was instantly sold on the idea as was my 14 year old son. Now both of them do it and neither of them vacuumed before!