  Unsteady spatially localized states such as puffs, slugs or spots play an
important role in transition to turbulence. In plane Couette flow, steady
versions of these states are found on two intertwined solution branches
describing homoclinic snaking (Schneider $\textit{et al.}$ 2010a). These
branches can be used to generate a number of spatially localized initial
conditions whose transition can be investigated. From the low Reynolds numbers
where homoclinic snaking is first observed ($Re < 175$) to transitional ones
($Re \approx 325$), these spatially localized states traverse various regimes
where their relaminarisation time and dynamics are affected by the dynamical
structure of phase space. These regimes are reported and characterised in this
paper for a $4\pi$ periodic domain in the streamwise direction as a function of
the two remaining variables: the Reynolds number and the width of the localized
pattern. Close to the snaking, localized states are attracted by spatially
localized periodic orbits before relaminarising. At larger values of the
Reynolds number, the flow enters a chaotic transient of variable duration
before relaminarising. Very long chaotic transients ($t > 10^4$) can be
observed without difficulty for relatively low values of the Reynolds number
($Re \approx 250$).
