Appendix 151 



ANTS 



For the control of ants in buildings, apply a 5 % DDT 

 solution, by spray or brush, behind and beneath baseboards, 

 window sills and frames; around sinks, and table and chair 

 legs; to both sides of pantry shelves; and to cracks and crev- 

 ices leading to the outside of the building. If the ants travel 

 along well-defined trails, pay particular attention to these 

 areas. A 10% powder is also effective, but is usually more 

 difficult to apply and, of course, leaves a visible deposit. How- 

 ever, the powder is very effeaive when applied directly to ant 

 hills. Ants will usually abandon an ant hill within a short 

 time after a small amount of DDT powder is applied around 

 the entrance holes. 



A single application of the spray or powder will control 

 many species of ants for several weeks. However, some 

 species do not respond to the DDT treatment. In such cases, 

 the addition of /4o% pyrethrins to the 10% powder often 

 proves effeaive. 



BEDBUGS 



DDT is the perfect answer to bedbug control. Three 

 fluid ounces of 5 % DDT in deodorized kerosene, used as a 

 spray, or about 2 oz. avdp. of a 10% DDT powder will not 

 only kill all the bedbugs in a full-sized bed, but will prevent 

 re-infestation for at least 6 months. The spray or powder 

 should be applied to both sides of the mattresses and pillows, 

 to the bed springs, and to the cracks and joints in the bed- 

 steads. Furthermore, since bedbugs may hide behind pic- 

 tures on walls, and in cracks and crevices along the window 

 and door frames and along baseboards and mouldings, these 

 places should also be sprayed or dusted. When the spray 



