摘要：A simple, portable frame tied with string soaked in insecticide has been devised by the authors to give a much greater chance for houseflies to contact the insecticide residue. Shell Dieldrex 15 was tested on the frame both in the laboratory and in the field with excellent results. The residual effect seems to last at least up to two-and-a-half months. No ill-effect resulting from the handling of dieldrin-treated frames has been observed. As the frame method is cheap and effective for housefly control, it can be introduced into any community which has unsatisfactory sanitation and where the housefly is still susceptible to insecticide. Full text Full text is available as a scanned copy of the original print version. Get a printable copy (PDF file) of the complete article (995K), or click on a page image below to browse page by page. 491 492 493 494 495
