| 摘要 |
A combustible pesticidal product (10) is disclosed which comprises a planar continuous helix (11) in the form of a hexagon having sides (24), (25), (26), (27), (28) and (29). An intersection (20), (22) of each side of the structure has a radius of curvature of 5.0 mm to less than 58.5 mm, most preferably 9.0 to 10.0 mm. Typically the combustible product will be a mosquito coil formed from cardboard which has been impregnated with one or more insecticides effective against mosquitoes. On combustion of the coil, insecticide may be emanated into the atmosphere for a period of up to 24 hours. However, typically the coils of the invention will be active against mosquitoes for 12 hours. The product is less prone to breakage, thus ensuring continuous combustion. |
