1. Executive Summary The bite-preventing effect of five treated textile samples from Feelway Corporation was compared to five untreated sample of the same fabrics in a cage test study with yellow-fever mosquitoes (Aedes aegypti) and two volunteers. The textile samples were attached to the forearms of the volunteers and exposed to a bloodhungry cage population of yellow-fever mosquitoes. During a test period of 2 minutes, the number of probing or biting mosquitoes was documented. In addition, five untreated control samples were evaluated, in order to determine the biting permeability of the used fabrics. The untreated 100% Cotton and 100% Poly samples (#3 and #5) could easily be pierced by the test mosquitoes, both volunteers received between 5 and 8 control bites within a maximum of 60 seconds. The untreated 100% Poly sample #2 received fewer bites and could not easily be pierced by the test mosquitoes, now both volunteers counted 2 bites in 2 minutes. During tests of the untreated 70% Cotton 30% Nylon sample, volunteer A received 4 bites in 2 minutes while volunteer B counted 2 bites in 2 minutes. Compared to the control tests, the treated samples 100% Poly #2, 100% Poly #3, 100% Poly #5 and 70% Cotton 30% Nylon gave a 100% bite protection during tests of both volunteers. When volunteer A tested the treated 100% Cotton sample 2 bites occurred in 2 minutes while volunteer B received 4 bites in 2 minutes, which corresponds to a 85,7% and 76,7% bite protection, respectively.
