WATCH THEM RUN …..Ever wondered how a cockroach almost senses you’re behind it and will always run away on approach? Well, if you’ve ever got up close to a roach you’ll notice two hairs in its back section. These two hairs have a name – Cerci. The Cerci are literally the cockroach’s built-in warning system. They can sense and detect even the slightest motion or breeze. As soon as motion is detected the cockroach knows to run – and hide. WHAT ARE THEY LOOKING AT….A roach has ‘compound’ eyes. This means it sees all around its body, not just to the front and sides like us. These compound eyes may not give the roach the clearest vision but these eyes do have more than 2,000 individual lenses. In comparision, the human eye has just one lens. The roach’s compound eyes pick up all movements to all sides of its body which will explain how the cockroach almost always gets away. HOW DOES IT SMELL….Well, the cockroach does not have a nose. However what it does have is 6 very fast legs. Their legs are extra sensory organs covered in little hairs which work in conjunction with the roaches antennae. It’s the antennae with gives the roach its sense of smell. The antennae help the cockroach find places to nest, feed and even other cockroaches. The male cockroach’s antennae goes one step further allowing the males to specifically sniff out female cockroaches. The cockroach also has a secondary way to smell – with its mouth. It’s also interesting to note at this point that whilst humans chew in an up and down motion, the cockroach mouth is designed to chew from side to side. WHAT DO THEY HEAR….Cockroaches have exceptional hearing. Their ears are not on their heads but in their knee joints. Their bodies are a counterweight which helps amplify the effect of low frequency sound. Cockroaches literally hear with their feet by sensing vibrations. A cockroach knows your home simply by sensing the sound waves of your footsteps as you approach. Remember that as you let yourself in tonight.
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