Table 1.--Mortality of adult cigarette beetles in the exploratory series 
of tests following exposure in the free air space of type A and B ware- 
houses that had been treated with DDVP in various manners 
; Amount of < Exposure period iS 
Method of application * DDVP per ;~ - - 
and type of warehouse | 1,000 See ; Tength ; Moreelity 
$ cubic feet : treatment ; : 
s Grams Hours Hours Percent 
Aerosol 2 
Type A (semiclosed) 
warehous@€ « e «ee e e @: h.25 @) 2h 100 
: 2h 2h 100 
: 2h 48 100 
3 48 2h 100 
: 72 2h 99 
° 168 2h 85 
Type B (ventilated) : 
warehouse « « 0 « « e e: 8.5 0 2h 100 
: 2h 2h 25 
2h 48 42 
3 Ls 2h 13 
: 72 2h 2 
Spray on floors, walls, ; 
and roof 8 
Type B (ventilated) P 
warehouse « e © ec © e e 3045 0 2h 100 
2h, 2h 5 
e 2h L8 22 
° 48 2h 2 
g 72 2h 6 
8 
Sprinkled in aisles : 
Type A (semiclosed) s 
warehouse e ee ee ee? 2eL nl 2h 100 
2 2h 2h 99+ 
3 72 2h 98 
$ he25 1 2h 100 
: h 2h 100 
i 72 2h 100 
Controls : = 0 2h - 
