684 INSECT PESTS OF FARM, GARDEN AND ORCHARD 



angles toward all parts of the house. The floor should be soaked 

 and even the roof or ceiling should be sprayed. Spraying the 

 outside will help to give complete control as such spray will 

 penetrate cracks which have not been reached from the inside. 



Roosts and nests should be made as simple as possible and as 

 easily removable, for the sake of subsequent treatments, as can 

 be arranged. 



Satisfactory sprays are crude petroleum, thinned with one- 

 fourth its volume of kerosene, which will destroy all the mites 

 at one application ; kerosene or kerosene emulsion, which requires 

 several treatments; lime-sulphur, which also should be applied 

 three for four times at intervals of a week; whitewash, to which 

 has been added five per cent of crude carbolic acid or cresol. 

 Nicotine preparations have given good results but require two or 

 three applications and must be used stronger than in spraying 

 plants. 



The periodical use of a strong whitewash with carbolic acid 

 added is a good sanitary measure, entirely aside from its effect 



FIG. 601. Depluming scabies (C. laevis var. gallinae); (a) adult male (x 114); 

 (6) adult female (x 108). (From Mote, after Sim, O. Agr. Exp. Sta ) 



on the mites and is to be recommended. If this is done, say once 

 every two or three months, the mites will probably never become 

 numerous. 



Other poultry mites include the Depluming Mite (Cnemido- 

 coptes gallinae Railliet), which burrows into the skin of the fowl 



