2°26 EXTERMINATING THE TEXAS-FEVER TICK. 
sighted economy, since in most cases it will increase the time necessary 
for eradication. If the ticks have entirely disappeared from the cat- 
tle during the fall and winter, this does not necessarily mean that 
eradication has been accomplished, because there may be present on 
the premises dormant seed ticks, live females, and eggs that will hatch 
with the coming of warm weather. It can not be determined until 
the next summer whether eradication has been entirely accomplished. 
In localities where ticks commonly occur on cattle in considerable 
numbers during the winter time it will be advisable to continue 
spraying. In localities where ticks disappear or are present in very 
small numbers during the winter, the cattle should be inspected 
Fig. 14.—Spraying cattle with hand pump from barrels on wagon. 
carefully each week to remove and destroy any ticks that may be 
present. When warm weather comes, it will be well in all cases in 
which spraying has been discontinued during the winter to begin 
spraying and continue until it can be determined with certainty that 
eradication has been accomplished. The spraying should not be 
delayed until ticks show again in considerable numbers. One tick 
destroyed in the early spring will save the trouble of destroying 
thousands a few months later. 
At the time of the first spraying all the large ticks should be 
removed by hand and destroyed. This will also be a very helpful 
thing to do at each spraying, when it is possible, because large females 
are likely to drop in a few hours after the cattle have been treated, 
and consequently may not suffer a great deal from the oil. The 
378 
—-_ 
