on; KiMKxns AND FOES 



153 



success. Wherever the apartments infested are small 



and can be tightly closed, these insects can be killed by 



fumigation with carbon bisulphide, 



a volatile and highly inflammable 



substance. Therefore great care 



must be taken to keep lighted 



matches away from its gases. FlG - 121 - E sg-P d of 



cockroach. 



Place the substance upon pans in 



the room, and then close the room and the substance will 

 evaporate. If used in sufficient quantities this carbon 

 bisulphide will kill the insects. It is very necessary, 

 however, that the mom be made tight, in order that none 

 of the gas may escape. It requires a strong gas to kill 

 the insects. 



House Ants. Another form which proves troublesome 

 in the cupboard and on the pastry shelves is the ant, 

 and of these there are a number of species which fre- 

 quently prove troublesome to the housekeeper. Carbon 

 bisulphide poured upon the hole from which they emerge, 

 this is the entrance to their nesting-place, will effect- 

 ually free the house of them. If, however, their nests 

 cannot be found, it becomes necessary to destroy them 

 whenever they are found in the house. This can be 

 done by placing large sponges in situations where the 

 insects are most numerous; these sponges, being sat- 

 urated with sweetened water, will collect the ants in 

 great numbers. The sponges <-i\\\ be placed in hot water 

 several times a day, thus killing the ants. 



