SANITATION 295 



creolin (2 parts creolin to 100 parts water) makes a good dip 

 for lice. Coal oil is very effective, but is apt to blister, and 

 should be applied lightly. Crude petroleum is also recom- 

 mended by some; it is inexpensive, does not blister, and is 

 more lasting in its effects than some patent preparations. 



In applying a dip, care must be taken to wet thoroughly 

 all parts of the animal's body. Lice are commonly found on 

 the inside of the legs, about the ears, or in the folds of the 

 skin on any part of the body, and, unless the application of 

 dip is thoroughly made, many of them will escape. Dipping is 

 one of the most effective methods, and, when large numbers 

 are to be treated, it is necessary to have a special dipping vat 

 through which the hogs are compelled to swim. The dip may 

 also be applied by means of a good spray pump, which forces 

 the dip through the hair and into all crevices. It may also be 

 applied by means of a broom, using a pail to hold the dip. By 

 brushing the dip into the hair the job can be done thoroughly. 



When lice have been in a building for some time, it will 

 be necessary to treat the building in practically the same way 

 as recommended for disinfection, the disinfectants being also 

 good insecticides. 



In treating for lice, one application of insecticide is seldom 

 sufficient, because there will be many eggs to hatch out to give 

 a new brood. A second treatment, about a week after the first, 

 should always be given, and a third treatment would not be 

 out of place. 



REVIEW, 



1. How may cleanliness be secured in a piggery? 



2. Mention several disinfectants and tell how to use them. 



3. Tell of the necessary steps in securing purity of quarters after a 

 disease among the hogs. 



4. Mention methods of purifying yards and pastures 



