12 



FARMERS BULLETIN 851. 



M 



FLYTRAPS. 



Flytraps may be used to advantage in decreasing the number of 

 flies. Their use has been advocated not only because of the immedi- 

 ate results, but because of the chances that the flies may be caught 

 before they lay their first batch of eggs, and that thus the possible 



number of future gen- 

 erations will be re- 

 duced greatly. 



Many types of fly- 

 traps are on the 

 market, and as a rule 

 the larger ones are the 

 more effective. Any- 

 one with a few tools, 

 however, can c o n - 

 struct flytraps for a 

 small part of the price 

 of the ready-made 

 ones. A trap which 

 is very effective in 

 catching flies and is 

 easily made, durable, 

 and cheap, may be 

 made as follows: 



'The trap (fig. 13) 

 consists essentially of 

 a screen cylinder with 

 a frame made of 

 barrel hoops, in the 

 bottom of which is 

 inserted a screen cone. 

 The height of the 

 cylinder is 24 inches, 

 the diameter 18 

 inches, and the cone is 22 inches high, and 18 inches in diame- 

 ter at the base. Material necessary for this trap consists of four 

 new or secondhand wooden barrel hoops, one barrel head, four laths, 

 10 feet of strips 1 to 1J inches wide by one-half inch thick (por- 

 tions of old boxes will suffice), 61 linear inches of 12 or 14 mesh gal- 

 vanized screening 24 inches wide for the sides of the trap and 41 

 inches of screening 26 inches wide for the cone and door, an ounce of 

 carpet tacks, and two turn buttons, which may be made of wood." 

 The cost of the material for this trap is not great, and in many cases 



FIG. 13. Conical hoop flytrap; side view. A, Hoops forming frame 

 at bottom. B, Hoops forming frame at top. C, Top of trap 

 made of barrel head. D, Strips around door. E, Door frame. 

 F, Screen on door. G, Buttons holding door. H, Screen on 

 outside of trap. 7, Strips on side of trap between hoops. J, 

 Tips of these strips projecting to form legs. K, Cone. L, United 

 edges of screen forming cone. M, Aperture at apex of cone. 

 (Bishopp.) 



