Cockroaches are the most repulsive of all household pests.
Not only do they look disgusting, but they act disgusting. According to the National Pest Control Association cockroaches can contaminate food and transmit disease carrying organisms, including staphylococci, strep, colform molds, salmonella, yeast s and clostridia. Cockroaches spread disease by carrying contaminated organisms onto your countertop or onto your leftout food. Roaches will eat animal and human feces, rotten and contaminated food, book bindings, leather, and even the glue on canned food labels. They like the glue in paper bags and can be transported from grocery store to homes via the bags.