Patent ID: 6451841
Filing Date: 2002-09-17
Classification: A01N,F23D

Abstract:
A method of combating insects and parasites comprising the steps of:providing a composition comprising permethrin and tetramethrin in a combustible solvent; diffusing said composition in a chamber to be treated; and said diffusing step being performed using a catalytic combustion burner made of porous ceramic material and comprising a top portion including a top end and a bottom portion including a bottom end, said bottom portion comprising a substantially axial cavity for receiving a wick dipping into said composition for feeding said composition to said burner, said cavity being opened out at said bottom end of said burner, being extended axially over the major portion of the axial size of said burner and being separated by a wall from said top end of said burner, and said top portion having an annular peripheral zone supporting a catalyst, said annular peripheral zone surrounding a catalyst-free central zone that forms a vaporizing zone.