Cockroaches: Most notably, in every homes and offices, you will find cockroaches in the kitchen and pantries. In addition, you also find the cockroaches in coffee vending machine, microwave, refrigerator and other such items. Because, cockroaches are thigmotropic,they like all such places where there are tight spaces. Also, they like oily greasy deposits as their food. These cockroaches are of small sizes. They are actually German Cockroaches. Furthermore, you will also find cockroaches in drains, wash rooms etc. They are large in size and scientifically known as American Cockroaches. Often, ladies and kids are badly scared by seeing the cockroaches. They carry many disease pathogen and contaminate food and water. They are responsible for many diseases.