A semiochemical composition comprising a Hematophagous Diptera bite inhibitor semiochemical composition comprising at least one compound selected from the group of 3-cyclopentyl 2-methyl propionic acid, 3-cyclohexyl 2-methyl propionic acid and methylated cyclohexyl acetic acid including their salts thereof, their derivatives thereof, their isomers thereof and/or their structural analogs thereof that retain their semiochemical activity and/or their mixtures thereof and an acceptable vehicle. Methods to prevent Hematophagous Diptera insects from landing and biting animals are also disclosed.
