Racoons that invade trash or food containers come in multiples. The first one is easy to kill with a 22 LR to head. Forget it after that! They're smart and have radar that senses humans with guns. I had to switch to a 22-250 with varmint bullets to clean them all up. 
Reminds me of the time 1st Squad got run out of their camp by a platoon of raccoons down at Fort Knox (basic NCO school). There's a reason they tell you to take your empty C-rat cans well away from the camp to bury instead of just tossing them into the brush.
The first night the raccoons were turned back by the M16 blanks. The second night they'd figured out the blanks were just blanks and after some rifle swinging and kicking attempts 1st Squad abandoned their camp and came running down the road to our camp for several hours. The went back the next morning and used their shelter halves to make hammocks far enough off the ground they hoped the raccoons would just pass under them as they swept through the camp.
True story. I hear the fire fight the first night and second night and my buddy in 1st Squad slept in front of our tent the rest of the 2nd night. Two is tight in a GI tent, three would have been unbearable.
Good luck with the raccoons. Oh, and be careful, around here they're bad to get rabies. Bag the dead ones with a shovel and heavy duty garbage bag for disposal. And don't assume their dead till after you've wacked them a time or two with the metal end of the shovel.
