152 DDT— Killer of Killers 



is used, the bed should be permitted to dry for a few hours 

 before it is made up. Neither the DDT dust nor the DDT 

 deposit lek after the evaporation of the solvent from a spray 

 will harm the skin. 



CARPET BEETLES 



For the control of carpet beetles in carpets, rugs, and up- 

 holstered furniture, treat with a 5 % DDT solution in the 

 same manner as described for the control of clothes moths. 



CLOTHES MOTHS 



(See MOTHS) 



COCKROACHES 



DDT is effective for the control of the American cock- 

 roach, the German cockroach, and the brown-banded roach. 

 Either 5 % DDT in kerosene or in emulsion form or a 10% 

 DDT powder can be used for the control of these insects. 

 With either material, it is necessary to maintain an effective 

 residual deposit. To kill roaches as they come into the 

 building from the outside, or as they migrate from one part 

 of the building to another, apply the spray or powder to 

 their hiding places — around refrigerators and sinks; pantry 

 shelves, table tops, table and cupboard drawers, and pipe 

 openings; and along baseboards, cracks, mouldings, etc. Since 

 cockroaches like to walk upside down beneath refrigerators, 

 shelves, and table tops, it is a good idea to spray these places 

 thoroughly. 



The action of DDT on roaches is slow, but it eradicates 

 an infestation in about a week after application if the DDT 

 residue is not removed. 



