The mark consists of three squares on the left side of the mark, the left most upper square is to the left of a second square of the same size and above a third square of the same size. Next to the left most bottom square and beneath the second square is a capital letter B. The three squares and letter B make a square shape. Next to the squares and letter B inside of a rectangle is the word "BULWARK". Underneath of the rectangle with the word "BULWARK" is the word "EXTERMINATING. The complete mark is rectangular in shape.