Cockroaches are known as carriers of dangerous disease-causing germs and can be the leading cause for the spreading of diseases such as salmonella and food poisoning. Given that cockroaches infest in large numbers and hide in and around the kitchen and pantry, it is necessary to get rid of the cockroaches as soon as you are aware of their presence. There are cockroach repellent sprays that might work for getting rid of the pests, but these measures might be temporary and could at best provide some relief for a short time. As such, for long-term relief, one needs to go for appropriate cockroach extermination techniques for the removal.