specified in the table is not readily avail- 

 able, read the directions for mixing that 

 appear on the labels of the products that 

 are available and select a product whose 

 label includes specific directions for bed 

 bug control.) 



Pyrethrum sprays should contain at 

 least 0.2 percent of pyrethrins. Most 

 pyrethrum preparations contain the 

 synergist piperonyl butoxide, which in- 

 creases the effectiveness of the pyrethrum. 

 The sprays should contain at least I per- 

 cent of this synergist. 



How To Use Sprays 



A single treatment with a lindane, 

 ronnel, or malathion spray usually con- 

 trols bed bugs in a room and leaves a 

 deposit that prevents reinfestation for 

 several months. Since it is impossible to 

 penetrate all the hiding places, control is 

 not complete or immediate— a few living 

 bugs may be seen for a week or 10 days 

 after the treatment. If you continue to 

 see bugs after 2 weeks, spray again. 



You can control bed bugs with a spray 

 containing only pyrethrum; but since 

 such a spray does not leave a long-lasting 

 deposit, several treatments 1 or 2 weeks 

 apart are required. 



Effectiveness of control depends on the 

 thoroughness with which spray is ap- 

 plied. To treat a bed — 



• Spray the slats, springs, and frame. 

 Apply enough spray to wet them 

 thoroughly. Do not miss any of the 

 crevices where bugs hide. 



• Apply a light mist spray to the en- 

 tire mattress. Penetrate seams, tufts, 

 and folds. 



About 4 ounces of spray usually is re- 

 quired to treat a bed and mattress. Al- 

 low 1 to 2 hours for the bed to dry before 

 putting on sheets or occupying it. 



Spray upholstered furniture thoroughly. 



In treating other hiding places, apply 

 enough spray to penetrate all crevices 

 and to wet all surfaces to the point of 

 runoff. Spray walls to a height of sev- 

 eral feet above the floor. 



Kinds of Sprayers 



Select a sprayer that can be adjusted 

 to produce either coarse particles or a 

 mist. The mist is needed when you 

 spray mattresses and upholstered furni- 

 ture; the coarse particles are needed for 

 all other parts of the spraying job. 



If only one or two rooms are to be 

 treated, the job can be done with a 1- 



Guide for Mixing Sprays 



Insecticides (as emulsiftable liquids) and certain of the 

 strengths in which they may be purchased 



Percentage of 

 insecticide de- 

 sired m spray 



Amount of emulsiftable liquid 



to mix with 1 quart of 



water or kerosene 



Lindane: 



20 percent 



12 percent 



Malathion, 50 percent. 

 Pyrethrum, 1 percent - 

 Ronnel: 



12 percent 



24 percent 



'0.5 

 0.1 

 '0.5 

 0.1 



1.0 

 ^0.2 



1.0 



1.0 



2 tablespoons 



1 teaspoon 



3 tablespoons 



2 teaspoons 



4 teaspoons 

 8 ounces 



6 tablespoons 



3 tablespoons 



For application to hiding places only. Apply lower concentrations on mattresses. 

 Refers to pyrethrins content. 



