Control or repellency of mosquitoes is accomplished by bringing the insects into contact with at least one of the compounds of the structure (I) wherein R is selected from &mdash；OH, &boxH；O, &mdash；OC(O)R4, &mdash；OR6, &mdash；(OR6)2, wherein each R6 is independently selected from an alkyl group containing from 1 to 4 carbon atoms and R4 is a branched or straight chain, saturated or unsaturated hydrocarbyl group with zero to two double bonds and from 1 to 15 carbon atoms； X is O or CH2, with the proviso that when X is O R can only be &boxH；O； each Z is independently selected from (CH) and (CH2)； y is a numeral selected from 1 and 2； R1 is selected from H or a branched or straight chain, saturated or unsaturated hydrocarbyl group with zero to two double bonds and from 1 to 15 carbon atoms； R2 is selected from H and a branched or straight chain, saturated or unsaturated hydrocarbyl group with zero to three double bonds and from 1 to 15 carbon atoms； R3 is selected from the group consisting of H and a branched or straight chain, saturated or unsaturated hydrocarbyl group with zero to three double bonds and from 1 to 15 carbon atoms, &mdash；(CH2)nOH, &mdash；C(O)OR5, &mdash；CH2C(O)OR7, &mdash；CH2C(O)R8, &mdash；C(O)NR9R10, &mdash；CH2C(O)NR11R12 where each of R5, R7, R8, R9, R10, R11 and R12 is independently selected from H and a branched or straight chain, saturated or unsaturated hydrocarbyl group with zero to three double bonds and from 1 to 15 carbon atoms and n is an integer of from 1 to 12； the bond between the 2 and 3 positions in the ring structure may be a single or a double bond； and wherein the compounds of structure (I) contain from 11 to 20 total carbon atoms in the compounds, with the proviso that when R is &boxH；O, X is CH2, Z is CH2, y is 1 R2 is H, and R3 is CH2C(O)OR7 then the total number of carbon atoms in the compounds of structure (I) is from 15 to 20 carbon atoms, and when X is O and R is &boxH；O the total number of carbon atoms in the compounds of s
