home use 
PICK ICS 
pishing 
HUNTING 
NURSERY 
OUT P©OfcS\ 
at home 
cf 
convenient 
tONlAINER l 
CARRYING CA9E 
AIR-O-SPRA 
Chr-OSpra 
A TRUE AEROSOL 
PROPER APPLICATION is the APEX of EXTERMINATION 
SCIENTIFICALLY DESIGNED 
FOR EFFECTIVE TREATMENT 
OF SPACE 
HAND FILLED - HAND OPERATED 
HOLDS THREE OUNCES 
DEVELOPED BY 
PAUL ENGSTRUM ASSOCIATES 
loot FOURTEENTH ST N.W. 
WASHINGTON 5. D.C. 
ANNOUNCING A NEW MECHANICAL HAND OPERATED 
SPRAYER THAT PRODUCES AN AEROSOL 
H. 0. Sohroeder and Arthur W* Lindquist, Bureau of Entomology and Plant 
Quarantine, Uni tad State* Department of Agrioulture, report in the June issue of "Soap 
and Sanitary Ghsedoals", a "Method of Dispensing BLghly Oonoentrated Household Sprays"* 
Sehroeder and Lindquist oite, by laboratory tests, comparative effioienoy of 
various typss of dispensing equipment in killing file# and mosquitoes* The various 
devioes tested contained the same type of inseotioide and the quantity released in¬ 
dicates the efffctive quantity for killing the flies and mosquitoes enolosed withing the 
treated areas 
1000 CUBIC FEET OF SPACE TREATED 
TYP E OF APPLICATOR TESTED VOL* OF INSECTICIDE RELEASED 
1* Conventional Ply Spray------ 10 Mililiters equiv* *3381 os* 
2* Modified Conventional Fly Spray --- 6 " " *1690 os* 
3* Liquified Gas Aerosol Bomb ----- —-3 grams " *1068 Os* 
4* AT b - 0-SPRA, Hand-Operated Aerosol --------- *5 Mililiters " ,0169 os* 
