Gosh, putin.
I would love to see your reaction if I ever pinned my hopes on the website of some pest control company in Las Vegas to the extent you have.
But since exterminators are your new ultimate source, here are two that contradict yours.
http://www.trianglepest.com/blog/how-prevent-and-eradicate-your-cockroach-infestation
http://arrow-exterminators.com/roaches/
Now, moving onto substance....
"'Show me where I said that.'
"[link ommitted]
"The exact quote was:
" 'Cockroaches are well known to come in through sewer pipes, putin.'"
So I didn't say often. Just like I said I didn't.
That said, you still have yet to grasp the basic point that there is no evidence that it is NOT often.
"Your reading comprehension skills are really off. The very first thing I mentioned from the link said the following:
"'Cockroaches seldom enter homes through sewer lines. Water in the traps beneath the sinks keeps the roaches out. '
"This is what I said. I repeated the 'seldom' point over and over again."
You must really think I'm too lazy to scroll up.
Yes, you did quote the "seldom" quote. But that was after you had already been arguing that they couldn't do it at all. And you didn't return to the "seldom" point again and again, or at all until I posted the study proving you wrong.
Here is another study about the dangers of the cockroach (I found plenty. This is more or less at random. There were many more implicating cockroaches in complications from or causing asthma).
"Domestic cockroaches and human bacterial disease," Frishman and Alcamo, Journal of Pest Control 1977 Vol. 45.
"In 1976 at Farmingdale in New York State, investigations were carried out for a year on the degree to which domestic cockroaches (Blattella germanica (L.), Periplaneta americana (L.) and Blatta orientalis L.) are vectors of bacteria capable of causing food poisoning and other diseases in man. Cockroaches collected from areas close to those where food was prepared or stored in hospitals, nursery schools, shops of various kinds and commercial restaurant kitchens were held with forceps and made to walk across the surfaces of 7 different types of bacteriological culture media, which were then incubated at 37 deg C. Nymphs and adults of all 3 species proved able to carry at least 1 type of bacterium capable of causing food poisoning. All species carried Staphylococcus in medium or high concentrations. Escherichia coli, at high concentrations, was obtained only from Blattella, and Salmonella, at low concentrations, only from Blatta. Streptococcus was obtained from cockroaches in only 2 sites, both of which were hospitals. These results indicate that cockroaches are not only a nuisance but a serious health hazard, and the implications for public health are discussed."
See also the book, "The Medical and Veterinary Importance of Cockroaches" by Roth.
"http://www.chron.com/news/houston-texas/article/Cockroaches-are-helpful-just-misunderstood-1540874.php
I'm sure you'll tell me entomologists don't know anything about cockroaches either. "
No, they should, but I'd take an epidemiologist or other public health professional over them on a question like this. But if it's entomologists we want, then here:
http://www1.extension.umn.edu/garden/insects/find/cockroaches/
"Many people are repulsed and/or disgusted by the simple presence of cockroaches. However, they are also an important public health problem by contaminating food and eating utensils. Cockroaches are known to carry human pathogens, such as Salmonella and E. coli, which can result in human diseases, such as food poisoning or diarrhea."