Ever tried shooting a rodent with a paintball gun? Inaccurate and makes more of a mess than shooting a rodent with a shotgun How to have fun with paint and a pellet gun... Fill a 2liter bottle half way full of paint and water and drop some dry ice in the the bottle... Screw the cap on and shoot the paint bomb with a pellet gun. I promise an explosion of color greater than any paintball experience you've ever had.
THIS. I enjoy shooting Tannerite Explosive Targets with rifles. That is amazing too. You should also specify OP. Are we talking Match Grade Plastic Airsoft, or BB Guns? Airsoft are fun. I attended a match once a few years ago with a nice ACR Replica Full Auto, and a M1911 Replica. BB guns though... Ohhhh. I have a whole collection for rodent/pest extermination. I use pellets and BB's. My favorite handgun is the Crosman Vigilante. Dirt cheap price, and great accuracy.