Patent ID: 7726066

Claim:
A pest control system for a vertical wall system in a structure having a wall system of the type comprising: an interior wall structure overlying a sill plate which is directly affixed to an upper surface of a foundation wall, said foundation wall having an outer vertical surface whose above-ground portion is generally exposed, said interior wall structure including a plurality of spaced vertical members, said interior wall structure also comprising an exterior wall covering, said exterior wall covering having an interior surface affixed to said spaced vertical members and an exterior wall surface; and an external wall covering comprised of lapped boards attached to said exterior wall surface of said interior wall structure, said external wall covering having an internal surface which is spaced from said exterior wall surface of said interior wall structure by a space sufficient for insects or termites to fit therebetween, said external wall covering having a bottom edge which extends below said sill plate which supports said interior wall structure, whereby said bottom edge overlies the outer vertical surface of said foundation wall, comprising: (a) an elongated tubular member, said elongated tubular member having an elongated aperture which extends substantially through its entire length, said elongated tubular member having a size and configuration adapted to permit it to fit between said exterior wall surface of said interior wall structure and said internal surface of said external wall covering, said elongated tubular member being disposed between said bottom edge of said external wall covering and said exterior wall surface of said interior wall structure, whereby said elongated tubular member is affixed to said outer vertical surface of said foundation wall and does not overlie said foundation wall; (b) means for sealing said elongated tubular member against said outer vertical surface of said foundation wall; (c) means for attaching said elongated tubular member between said outer vertical surface of said foundation wall without overlying said foundation wall; (d) means for permitting the injection of a foam containing a pesticide or termiticide into said elongated aperture; and (e) means for distributing said foam along at least a portion of the length of said elongated aperture and out of said elongated tubular member into the space defined between said outer vertical surface of said foundation wall and said internal surface of said external wall covering.