Dos and Don'ts for Goodwill

I called Goodwill on Saginaw to see if they accept donations, and if so, what the drop-off hours were. I also asked if there was anything I couldn't donate. The response was "No knives, guns or tires." Knives and guns on the face I can understand. I can also understand tires when I think about it for a minute. But what an odd combination. And how about, "No drug paraphrenalia," or "No medications." Just an odd happening today.