The most common insect of medical importance. Roaches are distributed worldwide, highly adaptable and durable. Their movement is active / on foot / and passive / supplies of goods /. Characterized by nocturnal activity, are omnivores and are vectors of many diseases - more than 40 pathogens, viruses, dysentery, infectious hepatitis, typhoid fever. They have incomplete development cycle, the female one lays one box every 20-25 days / under appropriate conditions / in each box an average of 30-40 eggs. Boxes are deposited in secret, moist and warm place, near the food. At high temperatures the time is shortened. Bulgaria offers several types of cockroaches - Brown / German / black / oriental / brown and American furniture- cockroach. An important condition to fight cockroaches is to maintain good hygiene - regular garbage disposal, proper storage of food and putting it back to designated areas, placement of mechanical barriers / clogging of the holes, gaps /. Sanitary condition of the buildings also contributes to the size of the population.

• Spray technique - uses insecticide that acts on contact cockroaches – i.e. species must crawl through sprayed surface, at least 24 hours the sprayed surface must not to be washed and the premises should not be occupied by people and animals. It is safe to enter after the quarantine period, followed by thorough cleaning of the surfaces. Preparation is active until it’s washing, so it is necessary to be done two times, and if necessary a third time. Due to the effect only on adult insects and not on the eggs there is a requirement for secondary treatment for the destruction of newly hatched individuals, performed 20 days after the first. For high efficiency the preparation should be splashed all rooms.

• Spreading technique - insecticidal gel preparation used. This type of treatment is extremely safe, highly effective and economical . It is not necessary to empty cupboards or drawers or to clean from the preparation. It has a long residual effect, cockroaches eat it, and die 24 hours after consumption and it also infects others in the nest. Gel is ideal for use in industrial zones and enterprises in retail outlets in the food industry, hospitals, kindergartens and other.