40 
BULLETIN 965, U. S. DEPARTMENT OF AGRICULTURE. 
writers to hang a container on each tree or shrub about the property 
and to place several about the house along the foundation where trails 
of ants are found. Where ant-frequented property adjoins, it is well 
to distribute containers at the margin. They can be tacked in pro- 
tected places on fences or to hedges. Ground traps should be placed 
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Fig. 20.— Diagram of residential property showing distribution of poisoned-sirup containers. 
along sidewalks and about lawns where trails are located. A satis- 
factory distribution of containers on a 50 by 200 foot lot is shown in 
figure 20. 
COMPREHENSIVE DEMONSTRATION OF CONTROL. 
A campaign directed toward the control of the citrophilus mealy- 
bug was started at Upland in 1917, and it was soon discovered that 
the 600 infested acres were entirely overrun with the Argentine ant. 
