Need help with an aggressive king snake

[PCMinNeed]

Hello all, I'm recently became a pet care manager at a pet store and am hoping that these forms can help me with some of my more advanced questions. So the current king snake I have in my care tends to strike most people who pick it up other than me. When I pick it up it will either crap and piss all over my hand or shake its tail like a rattler. Obviously this make the snake very hard to sell, so my question is is there a way I can make it less aggressive or if you guys have any other tips for me.

Thanks