ENEMIES AND DISEASES OF POULTRY 151 



to 4 gal. of water. Crude petroleum, benzine, gasoline, 

 or turpentine may be substituted for kerosene in this 

 formula also. 



Liquid lice killer is a name frequently applied to an 

 insecticide made from kerosene oil and powdered naph- 

 thalene flakes or balls, in the proportion of 2 Ib. of 

 naphthalene to 1 gal. of kerosene. The can containing 

 this solution should be covered so that the liquid will 

 not leak out of it, and the solution should be agitated 

 frequently by shaking. The solution should be allowed 

 to remain in this can about a week, when it should be 

 poured into another receptacle, so that another batch 

 can be mixed if necessary. If 2 fluid oz. of creoline or 

 of creosote are added to the clear solution, the effective- 

 ness of the solution will be improved. The cans con- 

 taining this solution should be kept in a temperature 

 that never goes below 40 F. or the naphthalene will 

 go out of solution and appear in flakes. The solution 

 should be kept for about 24 hr. in a warm place before 

 it is used, so that it will be at about 70 to 80 F. 

 when it is applied. This solution should never be kept 

 close to a fire, nor should any attempt be made to heat 

 it over or near a fire, as it is inflammable. This liquid 

 lice killer may be used for either painting or spraying 

 the interior of poultry houses and brood coops. 



Compound liquid insecticides made up according to the 

 following formulas may be used with safety on the 

 bodies of young chicks: 1 oz. of oil of sassafras to 2 or 

 3 oz. of sweet oil; 1 oz. of oil of aniseed to 3 oz. of sweet 

 oil. 



Lard can also be rubbed on the heads and throats of 

 young chicks for use as an insecticide. 



Whitewash is not effective as an insecticide unless it 

 is mixed with carbolic acid in the proportion of 1^ 

 fluid oz. of carbolic acid to 1 gal. of whitewash. Even 

 when containing carbolic acid, however, it cannot be 

 depended on to kill mites. If applied hot, the effective- 

 ness of this mixture will be increased. Whitewash 

 applied by itself will not kill insects unless it happens 



