18 



Ordinarily there is no danger of fire by this method. In 

 exceptional cases, however, sparks may be given off from 

 the mixture, so that it is desirable to place the container 

 inside of a large open pot, and to have no combustible 

 material in the immediate vicinity of the generator. 



Methods of using this and other disinfectants are clearly 

 explained in Farmers' Bulletin 345, "Some Common 

 Disinfectants." 



Infected Hay and Straw. — Where haymows, hay- 

 stacks, and straw stacks have been infected by animals 

 feeding from the sides or trampling upon it, the exposed 

 sides and top should be thoroughly raked off or cut down 

 for a distance of from 1^ to 2 feet, and the balance of the 

 stack sprayed with a 4 per cent formaldehyde solution. 

 The hay or straw removed from the infected stacks should 

 be measured and burned, a record being kept of the amount 

 destroyed in order that adjustment may be made. 



Disposal of Manure. — After manure has been disin- 

 fected as described in these instructions, it may, if 

 weather and field conditions permit, be hauled out and 

 spread upon a field to be plowed, and where it is not ac- 

 cessible to swine or ruminants. If it is impossible to dis- 

 infect and spread the manure at the time, it should be 

 hauled to some convenient spot, the surface forked over 

 and sprayed with a disinfectant to a depth of from 6 to 10 

 inches, and the top sprinkled with chlorid of lime or un- 

 slaked lime, or a layer of 6 inches of uncontaminated horse 

 manure. A strong pig-proof fence should then be built 

 about the pile. After the removal of this pile of manure 

 the ground upon which it has lain should be limed and left 

 exposed to the sun for a period of not less than 60 days. 



All litter and manure which has accumulated in the 

 barn lots prior to the slaughter of the stock must be cleaned 

 up, burned, or thoroughly disinfected. All ground from 



