Transcriber Note Text emphasis denoted as _Italics_ and =Bold=. Whole and fractional parts of numbers as 123-4/5. U. S. DEPARTMENT OF AGRICULTURE FARMERS' BULLETIN No. 734 FLYTRAPS AND THEIR OPERATION [DC] BOTH THE HOUSE FLY AND BLOWFLIES may be captured in traps. The character of the bait used and the location of the traps greatly influence the kind of flies caught. This bulletin tells how to make the flytraps that have been found most effective, where to put them, and how to bait and care for them. Flytrapping, of course, affords only partial relief. The logical method of fly control is to prevent the multiplication of these pests by proper disposal of or treatment of their breeding places. The reader is therefore referred to Farmers' Bulletin 1408 for further information on house-fly control, to Farmers' Bulletin 1097 for various methods of combating the stable fly, and to Farmers' Bulletin 857 for additional measures to be used against the screw-worm fly and certain other blowflies injurious to livestock. Issued June 10, 1916 Washington, D. C. Revised March, 1930 ADDITIONAL COPIES OF THIS PUBLICATION MAY BE PROCURED FROM THE SUPERINTENDENT OF DOCUMENTS U. S. GOVERNMENT PRINTING OFFICE WASHINGTON, D. C. AT 5 CENTS PER COPY =FLYTRAPS AND THEIR OPERATION= By F. C. Bishopp, _Principal Entomologist in Charge, Division of Insects Affecting Man and Animals, Bureau of Entomology_ =CONTENTS= Page Uses and limitations of flytraps 1 Kinds of flies caught 1 Types of traps 2 Trapping the screw-worm fly 11 Baits for traps 11 Bait containers 13 Care and location of traps 14 Sticky fly papers 14 =USES AND LIMITATIONS OF FLYTRAPS= [DC] FLYTRAPS have a distinct place in the control of the house fly and other noxious fly species. There is a general tendency, however, for those engaged in combating flies to put too much dependence on the flytrap as a method of abating the nuisance. It should be borne in mind that flytrapping is only supplementary to other methods of control, most notable of which is the prevention of breeding either by completely disposing of breeding places or by treating the breeding material with chemicals.