Really? Because according to a 2005 study funded by the US National Institute of Environmental Health Sciences (NIEHS) and the US National Institute of Allergy and Infectious Diseases (NIAID) cockroach allergens appear to worsen asthma symptoms more than any other known triggers.
And from another site:
[quote]Cockroaches clean themselves very scrupulously, as most insects do, in order that their sensory bristles on their body walls and limbs are ready to sense any hint of water, food, a mate or an enemy. Thirst, hunger, sex and safety rule the cockroach life. A cockroach with a dirty exterior is not a ‘lean mean machine’.
However, the cockroach GI tract can harbor all the diseases that are being passed around in the house or neighborhood. They are omnivorous and thus would just as likely eat a dead mouse or a bit of fallen cheese or nibble on your house plant. They often defecate near or on the food they eat so they are likely to pass the organisms in their GI tract to the food they are eating and the surfaces they walk and defecate on. [/quote]
So clean in appearance, yes, but certainly not clean in the sense that they’re safe to have around the house.