 Fleas are parasitic creatures that tend have a narrow range of host animals. The most common domestic types are cat and dog fleas, ( Ctenocephalides felis and C. canis ) which may also bite people, though humans are not their preferred host. The actual human flea, Pulex Irritans, is now quite rare in Western countries.
Historically probably the single most important carriers of disease, fleas play host to an enormous variety of bacteria, viruses and even worms, and their very irritating bite can become infected very easily due both to transmitted germs and excessive scratching. Because they tend to only bite exposed parts of the body, clusters of bites on the arms and legs are a good indicator of a flea problem.
Female fleas lay eggs which are not secured to the host and may fall anywhere, and today's prevalence of carpeting in homes creates an ideal breeding ground unless thorough vacuum cleaning is performed frequently. |
With its vicious-looking 'pincers' and alarming reputation, the earwig has inspired many stories about its behaviour - some quite gruesome and nearly all of them false. Able to breed in great numbers and thriving on rotting vegetation and other plant material, the earwig may cause some damage to plants, but its percieved threat is due more to its vicious appearance than any real danger to humans. In fact they are considered a relatively minor pest.
Silverfish may infest a home in large numbers without the occupants being aware of it, as they are nocturnal creatures, very swift runners and adept at hiding. Preferring a cool, dark and moist environment, they are often seen in bathrooms and kitchen cupboards.