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Sarcoptes scebiei cenis Crerl., mance or ssrcoptic rite of dop;s 
Derris ointment similar to that recommended for the treatment 
of ear mange, and a wash consisting of 4 ounces of derris powder 
(5 peroent of rotenone), 1 ounce of neutral soap, and 1 gallon of 
warm water have been found highly effective in curing sarcoptic 
mange. This mixture should be rubbed in well with a brush, two or 
three treatments being necessary to cure a dog.— Price and Eishopp 
(475); U. S. Bureau of Entomology and Plant Quarantine (627 , p. 17) • 
S--.rcopte8 spp. 
Dipping of foxes, on fox farms in Germany, was not completely ef- 
fective. Infested foxes, immersed in a 2-peroent derris dip, died of 
poisoning, even though washed with water afterwards.— Schoop (524 ) . 
Sarcoptes suis Gerl. 
An emulsion of neats-foot oil containing 1 percent of derris 
powder effected considerable improvement in 20 pigs, but not a com- 
plete cure of the mange.— Pullar (477 ) . 
Tarsonemidae 
Tarsonemus pallidus Banks, the cyclamen mite 
A spray mixture consisting of derris powder, pyrethrum extract, 
and sulfonated castor oil with water was effective against this mite 
on chrysanthemums .--Howard and coworkers ( 294 , p. 31). 
Tetranychidae 
Paratetranychus citri (McG.), the oitrus red mite 
Low dosage oil sprays (0.75 percent of light-medium oil) in com- 
bination with powdered rotenone-bearing roots were fairly effective. 
— Boyce and Korsmeier (81). 
A spray consisting of light-medium oil (0.5 to 0.75 percent) with 
rotenone may be used for control • — Quayle (482 , p. 26) • 
Paratetranychus pilosus (C. & F.), the Buropean red mite 
A spray containing rotenone (l percent in mannitan monolaurate, 1 
pint per 100 gallons) killed a majority of the mites within 3 days, and 
later was considered effective, but did not eradicate the pest.—Baten 
and Hut son (38) • 
