  It has recently been reported that bacteria, such as E.coli and P. putida,
perform distinct modes of motion when placed in porous media as compared to
dilute regions or free space. This has led us to suggest an efficient strategy
for active particles in a disordered environment: reorientations are suppressed
in locally dilute regions and intensified in locally dense ones. Thereby the
local geometry determines the optimal path of the active agent and
substantially accelerates the dynamics for up to two orders of magnitude. We
observe a non-monotonic behavior of the diffusion coefficient in dependence on
the tumbling rate and identify a localisation transition, either by increasing
the density of obstacles or by decreasing the reorientation rate.
