Whenever you think of buying bumble bee door knocker, you must have to make it sure that you have read the dimensions of the door knocker. The door knocker should not be too large as compared to the size of the door. The material with which the bumble bee door knocker is made of should also be taken into consideration. You must also that how much weight can your door withstand. The bumble bee door knocker is normally made up of brass and it is available in polished form as well. You can refresh brass anytime you want.