Dry cleaning

I just think this is so ridiculous that I have to post it.

So, my sister's dog decided to pee on her down comforter. (My other sister's dog decided to pee on my brother's down comforter, but that's a different story). So, she takes it to the dry cleaner to have it cleaned. The dry cleaner tells her, "This is dry clean only."

Really, why does the guy think she brought it to him in the first place?