-152- ' 
Turner ( 41C- ) in- 1935 reported on tests in. moth-proofing materials. 
Wool flannel was exposed to' the larvae. Three; .materials were tested, in- 
cluding rotenone in carbon tetrachloride at the rate of 1:1,000. The 
rotenone solution was not satisfactory. The two proprietary compounds, 
the one containing a fluoride, the other cinchona alkaloids, v:ere very 
effective in half-disc and v/hole-disc tests in- petri dishes. 
De3ussy et al. (57) in 1936 reported that larvae .are somewhat sensi- 
tive to derris powder and rotenone. 
Back ( 1 6_) in 1938 recommended spraying as one of the methods for con- 
trol of the webbing and the casebearing clothes- moths. Available trade- 
name sprays usually consist largely of a high-grade, odorless, stainless 
kerosene oil plus pyrethrum or derris extracts. Directions for making a 
spray of this type were issued by the United States Department of Agricul- 
ture. These sprays are contact sprays and do not render the sprayed 
objects immune to moth attack. They are used to destroy moths on clothing 
and furniture, in floor cracks, about baseboards, and elsewhere. They can 
be applied with hand sprayers, but are best applied with power sprayers. 
Craufurd-Benson (85) in 1938 reported that a derris insecticide had a 
very slight effect on the larvae dipped in it. 
Tineidae (unidentified sp. ) 
Kelsall et al. ( 233 ) in 1926 reported that a trunk of woolen goods" 
swarming with adult dotes moths was given a liberal application of a 
50-50 mixture of derris and hydrated lime. Four days later all mo 
were dead. The trunk was examined a month later and no living larvae 
and no moths were found. 
The Canada Experimental Farms (64) in 1927 stated that derris has 
been found "von,'' effective as a moth preventative". 
Back and Cotton (17) in 1931 stated that the most effective of 
mothproofing solutions for the control of moths in upholstered furniture 
are the fluoride, cinchona alkaloid, end rotencne solutions. 
Schmit'c (362) in 1931 reported that e>- ntal impregnation of 
woolens with rotenone in alcohol, ether, ether ana alcohol, chlorofor . 
and combinations of these extracts was effective in mothproofing the 
terial. 
Vizetelly (£59) in the 1931 edition of the New Standard ITncyolopedia 
wrote: 
"Some species of insects (clothes moths and fabric pests) may 
best be destroyed by rotenone (from derris r 
acetone. " 
