ROACH HABITS AS RELATED TO CONTROL 
Roaches hide during the day in sheltered, dark places, where they 
sometimes congregate in large masses. They come out and forage at 
night. If disturbed, they run rapidly for shelter and disappear 
through openings to their hiding places. To control roaches satis- 
factorily, you must locate the hiding places and treat them thoroughly. 
One way to find them is to enter a dark room quietly, snap on the lights, 
and watch where the roaches run. You may find them around the 
kitchen sink and drainboard; in the cracks around or underneath 
cupboards and cabinets or inside them, especially in the upper corners; 
behind drawers; around pipes or conduits, where they pass along the 
wall or go through it; behind window or door frames; behind loose 
baseboards or molding strips; inside the compartment containing the 
motor of mechanical refrigerators; on the under side of tables and 
chairs; and in the bathroom. 
Different kinds of roaches have different habits and have to be 
treated accordingly. The German and brown-banded roaches usually 
live and develop in the immediate areas where they are troublesome. 
The places described in the preceding paragraph are favorite haunts 
of the German roach, which is the kind most commonly found in homes. 
The brown-banded roach is also found in such places, and in addition, 
may be scattered all over the house instead of being restricted to the 
kitchen and bathroom. It inhabits high places in the room more than 
the German roach does. It may be in the upper parts of cabinets; on 
shelves in closets or bookcases; behind mirrors; and in upholstered 
furniture, radio cabinets, desks, dressers, magazine racks, or sewing- 
machine cabinets. The brown-banded roach is sometimes difficult to 
control. Because it lives all over the house, the application of an in- 
secticide must be more extensive and more thorough than for the con- 
trol of other roaches. 
The American and oriental roaches are frequently found foraging 
on the first floor of buildings, but they seldom develop there. They 
prefer damp, warm places, and usually develop in basements, store- 
rooms, steam tunnels, and similar locations. Insecticides applied in the 
living portion of the house will kill the roaches that come there, but 
others will continue to appear. To control them satisfactorily you 
must treat the source of the infestation. These roaches cannot survive 
outdoors during the cold winters of the Northern States. They may 
develop outdoors during the summer, however, and in warmer sections 
of the country the year round. Then they may constantly enter 
houses, especially those of loose construction. 
Infested apartments and row houses may also provide a constant 
source of infestation in adjoining premises. You can control these 
roaches fairly easily with the new insecticides, which have a long- 
lasting effect. 
When you treat your home, you kill the roaches present and leave 
a deposit of insecticide on the treated surfaces. It will not keep 
roaches out, but if it has been applied in the proper places, roaches 
will come in contact with it when they do enter and will be killed. This 
prevents an infestation from becoming established. A single treatment 
should give protection for several weeks, and longer when there is 
little opportunity for reinfestation. You must apply these residual 
ou 
