Since effective residual insecti- 
cides have become available, fumi- 
gation is seldom used. Only a pro- 
fessional pest-control operator 
should fumigate. 
Boric Acid and Borax 
Finely powdered boric acid and 
borax (sodium tetraborate penta- 
hydrate) act slowly and are gen- 
erally less effective than other 
insecticides against cockroaches. 
These materials are sometimes 
mixed with ingredients that are 
attractive to cockroaches and 
compressed into tablets to be used 
as bait. The powders or bait tab- 
lets may give satisfactory results 
when used in places where there 
is little food for cockroaches, such 
as in office buildings. 
PRECAUTIONS 
Pesticides are safe and effective 
when used as directed. Used im- 
properly they can be injurious to 
man, animals, and plants. The 
user is cautioned to read and fol- 
low all directions and precautions 
on the label of the pesticide for- 
mulation being used. 
The amount and frequency of 
pesticide use may vary in different 
sections of the country. This pub- 
lication is intended for nation- 
wide distribution. Users of this 
publication may also wish to con- 
sult their State agricultural ex- 
periment stations or County Ex- 
tension Service for information 
applicable to their localities, or 
obtain the latest recommendation 
if this publication is more than 2 
years old. 
The pesticides mentioned in this 
publication were federally regis- 
tered for the use indicated as of 
the issue of this publication. 
Store pesticides in original con- 
tainers under lock and key—out 
of the reach of children and ani- 
mals—and away from food and 
feed. 
Apply pesticides so that they 
do not endanger humans, live- 
stock, crops, beneficial insects, 
fish, and wildlife. Do not apply 
pesticides when there is danger 
of drift, when honey bees or other 
pollinating insects are visiting 
plants, or in ways that may con- 
taminate water or leave illegal 
residues. 
Avoid prolonged inhalation of 
pesticide sprays or dusts; wear 
protective clothing and equipment 
if specified on the container. 
If your hands become contami- 
nated with a pesticide, do not eat 
or drink until you have washed. 
In case a pesticide is swallowed 
or gets in the eyes, follow the 
first-aid treatment given on the 
label, and get prompt medical 
attention. If a pesticide is spilled 
on your skin or clothing, remove 
clothing immediately and wash 
skin thoroughly. 
