When treating cupboards and pantries, it is best to take everything 
from the shelves and remove drawers. Food and utensils cannot be- 
come contaminated if this is done. Then spray or dust the interiors. 
Allow the spray to dry, or clean up excess powder, before replacing the 
articles. Clean the surfaces of shelves or cover them with paper 
before replacing the food, dishes, or utensils. If the drawers are 
cleaned thoroughly, it will not be necessary to spray inside them, but 
it will help to spray the sides, back, and under surface. 
Caution: Most roach insecticides are poisonous to man and animals. They 
can be used safely, however, if a few simple precautions are observed. Keep 
them out of the reach of children and pets. Do not contaminate food, dishes, 
or utensils while applying insecticides. Do not use oil sprays in places where 
they could be ignited, particularly by open flames or electric sparks. Avoid 
unnecessary exposure when using sprays or dusts, especially those containing 
chlordane or DDT. During prolonged handling it may be desirable to use a 
respirator. Do not use chlordane to treat an entire room; restrict its use to 
places where the roaches hide or crawl. When you have finished applying in- 
secticides, clean the spray equipment and wash all exposed parts of the body 
with soap and water. 
OTHER METHODS OF CONTROL 
In addition to the control measures that have been discussed, several 
others are sometimes employed. Some effective measures cannot be 
used in certain situations. Others may not be completely effective but 
may be utilized under special conditions to provide at least a fair 
degree of control. Some of these measures will be discussed briefly. 
Aerosols 
Most aerosol dispensers, or bombs, for home use contain DDT and 
pyrethrum. Aerosols may be helpful in controlling roaches if you use 
them liberally and direct them into hiding places. You will need to 
use more of the aerosol for roaches than is necessary to kill flies or 
mosquitoes. These high dosages may be irritating, and are not con- 
sidered desirable unless people and pets stay out of the treated room 
for about an hour after the aerosol has been applied. 
Aerosols have limited penetrating power, but small amounts may 
reach some roaches in partially protected places and cause them to 
run out into the open, where they may be exposed to enough insecticide 
to killthem. Better results will be obtained if all openings are closed 
to prevent the escape of roaches from the room being treated. 
An aerosol has little or no lasting, or residual, effect. Repeated 
heavy applications are required. A single application of a residual 
spray or dust will give better results against a well-established infesta- 
tion or in premises ‘subject to constant reinfestation. 
Several types of electrically operated machines on the market are 
designed to produce a fine spray, part or all of which may be an aerosol. 
The spray is produced in various ways—by compressed air, by steam, 
or by mechanical means. Some of these sprayers may be adjusted or 
will produce enough large spray particles to wet surfaces and provide 
aresidual application of insecticide. 
