[en] Solvent holes were studied in two-laser, two-color experiments in decalin, methylcyclohexane, and cyclohexane solutions containing aromatic solutes. The holes were produced by photoinduced valence band electron transfer from the solvent to the excited doublet states of aromatic radical cations. The d.c. conductivity signals of these rapidly migrating holes exhibit an exponential decay in both decalins and methylcyclohexane. The rate constants for reaction of the solvent holes with various solutes were measured in trans-decalin, mixtures of trans- and cis-decalins, and methylcyclohexane at room temperature