Polyethylene film impregnated with lambda-cyhalothrin was placed over a sand plot and covered with a concrete slab to allow insecticide movement into the sand for a period of 5.5 yr. Discs of polyethylene film and sand beneath them were sampled annually for 5 yr and at 5.5 yr for bioassay with the Formosan and eastern subterranean termite. Results demonstrated that sufficient quantities of lambda-cyhalothrin were released from the impregnated polyethylene film into adjacent sand to prevent termite penetration. The impregnated film has less environmental impact than conventional liquid termiticides because the insecticide is held in the polymer. Other advantages include its dual function as a construction moisture barrier and ease in verifying its proper installation.
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1 April 2004
Polyethylene Barrier Impregnated with Lambda-Cyhalothrin for Exclusion of Subterranean Termites (Isoptera: Rhinotermitidae) from Structures
Nan-Yao Su,
Paul Ban,
Rudolf H. Scheffrahn
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Journal of Economic Entomology
Vol. 97 • No. 2
April 2004
Vol. 97 • No. 2
April 2004
Coptotermes formosanus
IMPASSE
R. flavipes
soil barrier