Good god, everyone has to do things the hard way that involve effort. Tennis racqets are for the physically fit. Get a left blower that has the suck and mulch option and have at with the little bastard.
Other alternatives:
-Yell at it
-That or catch it with your bare hands and bit its head off
-Throw randoms objects in its general direction
-Fire extinguisher (it will make the bat hibernate or die)
-Set the room on fire and smoke him out
-Yell at it again.
-Open a window and let the damn thing find its own way out
-get a batsuit and tell all your friends you're batman
Thats a good starter list, or just use the leaf blower on blow, that will agitate it. Then it will leave on its own.