Preparation and Use of Formula A . --This formula is prepared and 
used esentially as described for EQ 335. The kaolin may be handled with 
or independently of the silica gel. 
Preparation and Use of Formula B . --Dissolve lindane and stearic 
acid in previously mixed pine oil-mineral oil-triethanolamine by use of 
gentle heat. Dissolve the Veegum in water slowly with continuous agitation 
until a smooth texture is obtained. Combine the two solutions at approx- 
imately 65° C^with agitation, and continue to stir until cool. Directions 
for use are the same as for EQ 335. 
Formula B can be varied. Triethanolamine stearate can be used 
instead of triethanolamine and stearic acid, or these materials may be 
used in a 2:4 instead of a 3:6 ratio. It also appears that sodium alginate 
(Kelgin, produced by the Kelco Company) may be used instead of Veegum. 
Since the formula contains water, it should be protected from freezing. 
Any water-base formula is subject to separation when exposed to high or 
to low temperatures. Formula B can be returned to its original con- 
sistency and texture with agitation when the temperature rises above 
freezing. 
LIQUID PREPARATIONS CONTAINING LINDANE AND PINE OIL 
Some stockmen prefer a liquid screw-worm remedy to smears. 
Preparations containing a thickening agent usually provide a longer period 
of residual protection than do the liquids containing the same percentage 
of lindane, because more of the applied material remains in and around 
the wound. However, a liquid remedy may be prepared by omitting the 
thickening agent, silca aerogel, used in EQ 335 and increasing the percentage 
of mineral oil proportionally. This preparation should not be designated 
as an EQ 335 remedy. 
The liquid treatment merely poured on or squirted into wounds some- 
times fails to kill deeply pocked larvae. It should be worked into the 
deepest parts of an infested wound. It is suggested that labels on liquid 
remedies containing 3 percent of lindane and 35 percent of pine oil direct 
that the treatment be applied to the wound twice weekly until the wound 
is healed. 
PRECAUTIONS IN USING SCREW -WORM PREPARATIONS 
CONTAINING LINDANE 
1. Use the minimum amount of material necessary to treat the 
wound. 
2. Baby calves are very susceptible to lindane. Navels or other 
wounds on new-born calves can be treated with complete safety if no 
more than 2 or 3 teaspoonfuls of EQ 335 or other lindane preparation 
are applied at one time. When applied once or twice a week as directed, 
