DEAR ABBY: My husband and I are seniors who look forward to visits from our adult children. The problem is our oldest son. He visits every few months and leaves belongings behind. He uses our guest room, where he has claimed much of the closet, several dresser drawers, the guest bathroom vanity and even part of our shed. He says he needs to leave things because it’s too expensive to check bags when he flies into town. We would like our guests to have space when they come to visit, and we are also trying to downsize and declutter. We ...