A compound of Formula wherein W is O or S; R2 and R3 are independently hydrogen, or C 1 -C 3 alkyl; R4 and R5 are independently hydrogen, halogen, nitro, cyano, C 1 -C 3 alkyl, C 1 -C 3 haloalkyl, C 1 -C 3 alkoxy, C 1 -C 3 haloalkoxy, hydroxyl, -OC R9, amine, N- C 1 -C 3 alkyl amine, or N,N-di-C 1 -C 3 alkyl amine; R9 is hydrogen, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, or C 1 -C 6 haloalkyl; R6 and R7 are independently hydrogen, C 1 -C 3 alkyl, hydroxyl, halogen, or C 1 -C 3 alkoxy; R8 is hydrogen, nitro, cyano, C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl; R1 is hydrogen, C 1 -C 6 alkoxy, hydroxyl, amine, N-C 1 -C 6 alkyl amine, N,N-di- C 1 -C 6 alkyl amine, C 1 -C 6 alkyl optionally substituted by one to five R10, C 1 -C 8 alkylcarbonyl-, or C 1 -C 8 alkoxycarbonyl-, aryl optionally substituted by one to five R10, heteroaryl optionally substituted by one to five R10, heterocyclyl optionally substituted by one to five R10, benzyl optionally substituted by one to five R10, C 2 -C 8 alkenyl optionally substituted by one to five R10, C 2 -C 8 alkynyl optionally substituted by one to five R10, C 3 -C 7 cycloalkyl, or C 3 -C 10 cycloalkyl substituted by one to five R10; R10 is cyano, nitro, halogen, hydroxyl, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 1 -C 6 haloalkyl, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, N- C 1 -C 6 alkyl amine, N,N-di- C 1 -C 6 alkyl amine, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl-, C 1 -C 8 haloalkylsulfonyl-, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 alkoxycarbonyl, C 2 -C 6 alkenyl or C 2 -C 6 alkynyl; Y 1 and Y 2 are C; A 1 and A 2 are C-X, wherein each X may be the same or different provided that A 1, A 2, A 3, Y 1 and Y 2 form an aromatic ring; A 3 is sulphur; and X is hydrogen, halogen, cyano, nitro, hydroxyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, amine, N- C 1 -C 6 alkyl amine, N,N-di- C 1 -C 6 alkyl amine, C 1 -C 6 alkyl optionally substituted by one to five R10, C 1 -C 8 alkylcarbonyl-, or C 1 -C 8 alkoxycarbonyl-, N-C 1 -C 6 alkyl aminocarbonyl, N,N-di C 1 -C 6 alkyl aminocarbonyl, aryl optionally substituted by one to five R10, heteroaryl optionally substituted by one to five R10, heterocyclyl optionally substituted by one to five R10, C 2 -C 8 alkenyl optionally substituted by one to five R10, C 2 -C 8 alkynyl optionally substituted by one to five R10, C 3 -C 7 cycloalkyl, C 1 -C 10 cycloalkyl substituted by one to five R10, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl-, or C 1 -C 8 haloalkylsulfonyl; or salts or N-oxides thereof. W is O or S; R2 and R3 are independently hydrogen, or C 1 -C 3 alkyl; R4 and R5 are independently hydrogen, halogen, nitro, cyano, C 1 -C 3 alkyl, C 1 -C 3 haloalkyl, C 1 -C 3 alkoxy, C 1 -C 3 haloalkoxy, hydroxyl, -OC R9, amine, N- C 1 -C 3 alkyl amine, or N,N-di-C 1 -C 3 alkyl amine; R9 is hydrogen, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, or C 1 -C 6 haloalkyl; R6 and R7 are independently hydrogen, C 1 -C 3 alkyl, hydroxyl, halogen, or C 1 -C 3 alkoxy; R8 is hydrogen, nitro, cyano, C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl; R1 is hydrogen, C 1 -C 6 alkoxy, hydroxyl, amine, N-C 1 -C 6 alkyl amine, N,N-di- C 1 -C 6 alkyl amine, C 1 -C 6 alkyl optionally substituted by one to five R10, C 1 -C 8 alkylcarbonyl-, or C 1 -C 8 alkoxycarbonyl-, aryl optionally substituted by one to five R10, heteroaryl optionally substituted by one to five R10, heterocyclyl optionally substituted by one to five R10, benzyl optionally substituted by one to five R10, C 2 -C 8 alkenyl optionally substituted by one to five R10, C 2 -C 8 alkynyl optionally substituted by one to five R10, C 3 -C 7 cycloalkyl, or C 3 -C 10 cycloalkyl substituted by one to five R10; R10 is cyano, nitro, halogen, hydroxyl, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, C 1 -C 6 haloalkyl, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, N- C 1 -C 6 alkyl amine, N,N-di- C 1 -C 6 alkyl amine, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl-, C 1 -C 8 haloalkylsulfonyl-, C 1 -C 8 alkylcarbonyl-, C 1 -C 8 alkoxycarbonyl, C 2 -C 6 alkenyl or C 2 -C 6 alkynyl; Y 1 and Y 2 are C; A 1 and A 2 are C-X, wherein each X may be the same or different provided that A 1, A 2, A 3, Y 1 and Y 2 form an aromatic ring; A 3 is sulphur; and X is hydrogen, halogen, cyano, nitro, hydroxyl, C 1 -C 6 alkoxy, C 1 -C 6 haloalkoxy, amine, N- C 1 -C 6 alkyl amine, N,N-di- C 1 -C 6 alkyl amine, C 1 -C 6 alkyl optionally substituted by one to five R10, C 1 -C 8 alkylcarbonyl-, or C 1 -C 8 alkoxycarbonyl-, N-C 1 -C 6 alkyl aminocarbonyl, N,N-di C 1 -C 6 alkyl aminocarbonyl, aryl optionally substituted by one to five R10, heteroaryl optionally substituted by one to five R10, heterocyclyl optionally substituted by one to five R10, C 2 -C 8 alkenyl optionally substituted by one to five R10, C 2 -C 8 alkynyl optionally substituted by one to five R10, C 3 -C 7 cycloalkyl, C 1 -C 10 cycloalkyl substituted by one to five R10, C 1 -C 8 alkylthio-, C 1 -C 8 haloalkylthio-, C 1 -C 8 alkylsulfinyl-, C 1 -C 8 haloalkylsulfinyl-, C 1 -C 8 alkylsulfonyl-, or C 1 -C 8 haloalkylsulfonyl; or salts or N-oxides thereof.