HOG-LOUSE 655 



oil with soap and water. The formula for making a strong solution 

 of this form of dip is as follows : 



Kerosene 2 gallons. 



Soap 8 ounces. 



Water 1 gallon. 



Dissolve the soap in boiling water. Add this solution while hot to the 

 kerosene, stirring the mixture vigorously for ten minutes. 



This forms the strong or stock solution. When it is desired to 

 use this for dipping or spraying of animals, 1 gallon of the strong 

 solution is added to 9 gallons of water and used in this strength. 



The kerosene emulsion has some advantages over the coal-tar 

 preparations, in that it is probably more destructive to the nits and 

 almost equally as efficient in destroying the live lice. It is not as 

 valuable, however, in reheving the irritation of the skin, and, unless 

 care is used in its apphcation, it may even be the cause of quite 

 severe inflammation of the skin that is more dangerous than the 

 lice for whose destruction it was intended. 



Kerosene emulsion is not advisable to use in the early part of 

 the day. If the animals are dipped in this preparation in the morn- 

 ing, and allowed to run in the sun during the day, the rays of the 

 sun, acting upon the kerosene-soaked skin, produce a very severe 

 inflammation, and in young pigs with a thin, sensitive skin may 

 produce quite dangerous consequences. Kerosene dips are best 

 given late in the afternoon or evening, and the kerosene has thus 

 a chance to dry off before the sun strikes the pigs on the following 

 day. It is even better to keep them in a shaded lot for a couple of 

 days after dipping. 



Spraying. — Where a dipping vat is not at hand, and the number 

 of animals is not large enough to justify putting one in, the dip or 

 coal-oil emulsion may be used by means of a spray pump or an 

 ordinary sprinkling can. The animals should be thoroughly 

 sprinkled or sprayed, and especially should those parts where the 

 lice are most commonly found be thoroughly soaked with the dis- 

 infectant solution. 



While this method is not as effective as the use of these same 

 solutions by means of a dipping vat, yet very good results can be ob- 

 tained where a little care is taken. This method requires more of 

 the solution, as there is considerable waste which is avoided by use 



