38 BULLETIN 959, U. S. DEPARTMENT OF AGRICULTURE. 
several inches should be left when the wire has been completely fas- 
tened around the trunk of the tree, and this overlapping should be 
stretched slightly over the wire beneath, so as to make a tight joint. 
If, as pointed out above, care is taken to produce a bulge sufficient 
to hold the wire well away from the burlap, to fit the wire snugly to 
the tree and make the overlapping tight, the codling-moth trap will 
remain in perfect operation throughout the season. It will then be 
practically impossible for the pup, just before the moths emerge, 
to work their way up to the wire, allowing the moths to emerge on 
the outside of the trap, a thing which is sure to happen when the 
wire is close to the burlap. 
Care should be taken that there are no openings between the wire 
and the tree trunk through which moths may escape from the trap. 
These can be prevented by placing a thin coating of ordinary roof 
tar over the edges of the trap. This is a very practical and con- 
venient method of making traps moth-tight. The tar can be con- 
veniently melted in a smal! melting pot or pail held over a flame and 
can be applied best by means of a small stick with a bit of cloth on 
the end. Tar can not be applied easily with a. brush. In applying 
the tar, roll the stick or the dauber toward the tree as it is passed 
along the edges of the trap. The tar need not be applied until 
shortly before the time the first moth of the first brood emerges. 
MAINTENANCE. 
When once attached to the tree as outlined above and carefully 
sealed with tar, the codling-moth trap should remain in perfect oper- 
ation throughout the season and should require very little atten- 
tion. In some cases an inspection the following spring to close up ~ 
any holes which may have formed will be sufficient to put the trap 
in condition for another year. 
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