The only Rim Block That Kills Germs as it Freshens : A close-up inside a toilet shows many multi-eyed monsters bobbing around and enjoying the blue water as if they are on a summer holiday, noting that the scented rim block can’t harm them. One of them becomes aware of a fresh smell and spots a Domestos Germ Blaster block being placed under the toilet rim, and they all scurry to get away. The narrator advises that it is the only rim block to kill germs as it freshens.