Figure 3. Graphical classification of the compounds tested in this study and repellency.

Columns contain molecules with the same combination of functional groups (hydroxyl –OH and methoxy –O–CH₃ groups), but with a different side-chain (no side-chain or methyl, ethyl, vinyl, allyl side-chains) on the benzene ring; rows contain molecules that have the same side-chain but different functional groups. Grey tones indicate the repellency of each molecule: dark grey represents molecules repellent at the lowest dose (10 µg); medium grey, molecules repellent at the medium dose (100 µg); light grey, molecules repellent only at the highest dose (1000 µg); very light grey, molecules which are not repellent even at the highest dose.