THE AKGEXTIISrE ANT : DISTEIBUTIOIT AND CONTKOL. 23 



be the best and most economical f umigant for use in the trap boxes. 

 It is hardly necessary to state that this method of control is not ap- 

 plicable to city conditions, where dry nesting quarters are very 

 plentiful and the ants do not colonize to any great extent. 



SUMMARY OF CONTROL MEASURES. 



ANT BAEEIEES. 



In grossly infested houses much relief may be secured by isolating 

 tables, refrigerators, safes, beds, etc., with bichlorid-of -mercury tape, 

 or by placing the legs of articles of furniture in saucers filled with 

 moth balls or coal oil. Trees, beehive stands, and other outdoor ob- 

 jects may be isolated with the sticky substance used on fly paper but 

 made thinner than usual. If 5 per cent of carbolized oil be added, 

 the durabilit}' of the bands will be considerably increased. 



EEPEIXENT ANT POISONS. 



Repellents are much used to keep the ants from buildings. Strong 

 antimony or arsenical sirups, a number of which are sold by drug- 

 gists in infested territory, are used for this purpose. They give 

 quick relief for short periods, but they are not a factor in the reduc- 

 tion of the infestation. 



ATTEACTn^ ANT POISONS. 



The onl}^ effective poisons yet known for permanent control are 

 poisoned " sirups. The improved arsenical sirup recommended o^ 

 page 18 will not spoil and is superior to any other formula yet tested 

 on account of its stability at high temperatures, freedom from cr\^s- 

 tallization, and continued attractiveness. ' 



TBAPPING ANTS. 



Trapping ants may be accomplislied in rural locations bv provid- 

 ing boxes of decaying vegetation in the winter. The colonies will 

 move into these boxes and the ants may theij^ be killed "with carbon 

 bisulphid. 



WASHIXGTO-V : GO^ERXMEXT PRIXTIX'G OFFICE : 1916 



