So Bizarre - Clothing and Relative Visits

Maybe they have stuff for him to use at their house, and find it easier to use that stuff than to have to keep track of your stuff? Like if they unpack him and then forget to put something back in, they think they'll get in trouble for "stealing" your clothes? Who knows, but I wouldn't take offense. I'd be glad they're not just keeping everything you send so that you have to keep buying new stuff in between visits!