I watched a 1955 film called Tarantula in the early hours of the morning and can conclusively say that a grenade wouldnt work.. not if all the TNT they used didnt work.. they blasted the giant T with napalm from aircraft hehehehe it was real I tell you!My money's on him either rolling a grenade into the room or using a flame thrower. If he tried a two by four the thing would have ran up it and shredded his face.
--the nature boy