THE GUINEA PIG 



Parasites 



Lice are frequently troublesome to guinea pigs. The only effective 

 treatment has been to dip all the animals in a solution of 1-percent 

 creolin. This should be done in a heated room, and provision should 

 be made for proper drying of the animals. Dipping in an emulsion 

 or aqueous suspension containing 0.3 percent DDT (4 ounces of com- 

 mercial 50-percent wettable DDT in 5 gallons of water) or in a prepa- 

 ration containing about 0.04 percent gamma benzene hexachloride (4 

 to 4.5 ounces of commercial wettable 50-percent BHC, containing 6 

 percent gamma insomer, in 5 gallons of water) is more effective than 

 creolin and probably safer. Since all species of lice affecting domestic 

 animals appear to be destroyed by these newer insecticides, it is prob- 

 able that dusting sparingly with one or another of the commercial 

 louse powders is an effective and safe alternative method of treatment. 



U. S. GOVERNMENT PRINTING OFFICE: 1949 



For sale by the Superintendent of Documents, U. S. Government Printing Office 

 Washington 25, D. C. - Price 5 cents 



