DDT Formulations 85 



and sprinkle it in your pooch's fur or in your underwear. A 

 10% DDT powder is what you want — the same material 

 that proved so effective in stopping the typhus epidemic in 

 Naples. 



These powders are made by grinding DDT with an in- 

 ert ingredient, usually pyrophyllite or talc. The powder 

 flows easily and adheres well. Like the residue left from a 

 5 % DDT spray, the powder has residual action, retaining 

 its effectiveness for months. 



About 1% oz. of the powder sprinkled around on the 

 mattress, springs, and joints of a full-sized bed will keep it 

 free from man's nocturnal companions — the bedbugs — for at 

 least six months. Sprinkled around the hiding places of 

 cockroaches, the powder will eventually rid the premises of 

 these pests, although it takes about a week before you can 

 see the results. Similarly with ants: sprinkle the cupboard, 

 baseboards, under the sink, and other places where these 

 little insects migrate. Of course, be sure you don't get the 

 powder on food, for you want to kill the inseas, not your- 

 self. But don't worry about getting it on your skin. It 

 won't hurt you. And it won't hurt your dog to have a good 

 deposit of DDT on his hide either. But don't use it on your 

 cat, for he — or is it a she? — likes to lick himself to keep his 

 fur nice and clean. Licking up some DDT probably wouldn't 

 kill him but it might make him sick. However, you can 

 control his fleas by sprinkling the powder around the place 

 where he sleeps. 



Milky White 



It is unfortunate that DDT is not soluble in water. If 

 it were, it would be much easier to use for many purposes. 



