My grandmother crocheted me a pretty decently sized blanket for my 16th birthday. It's survived 4 moves, nearly 6 years, and is looking a little rough around the edges - covered in hairballs and dirt and general floor debris. Is it okay to put something like this in a washing machine or will that rip it apart? It's just crocheted, nothing fancy about it. How do you clean this sort of thing, TQC?