Dust 
Apply an insecticide dust with 
a puff duster of the bulb, plunger, 
or bellows type. Blow the dust 
into hiding places that are hard 
to reach with a spray and onto 
surfaces where cockroaches run. 
A light, uniform film is sufficient. 
Repeat when moisture causes the 
dust to cake. 
BN-2291 
Brown-banded cockroach: Above, fe- 
male; below, male. (1% times natural 
size. ) 
Mention of a proprietary product in 
this publication does not constitute a 
guarantee or warranty of the product 
by the U.S. Department of Agriculture 
and does not imply its approval by the 
Department to the exclusion of other 
products that may also be suitable. 
Placing a band of dust on the 
floor around the edges of a room 
is not an adequate treatment. 
Many cockroaches may be able 
to go from their hiding places to 
sources of food and water with- 
out crossing the band of dust. 
PLACES TO TREAT 
For best results, apply insecti- 
cides to places where cockroaches 
hide. 
To find the hiding places, enter 
a dark room quietly, turn on the 
lights, and watch where the cock- 
roaches run. 
They may hide— 
Around the kitchen sink and 
drainboard. 
In cracks around or underneath 
cupboards and cabinets, or 
inside them—especially in 
upper corners. 
Around pipes or _ conduits, 
where they pass along the 
wall or go through it. 
Inside the motor compartment 
of mechanical refrigerators. 
Behind window or door frames. 
Behind loose baseboards or 
molding strips. 
On underside of tables and 
chairs. 
In radio and television cabinets. 
Behind mirrors. 
On closet and bookcase shelves. 
7 
