  A certain class of superselection sectors of the free massless scalar field
in 3 space dimensions is considered. It is shown that these sectors, which
cannot be localised with respect to the vacuum, acquire a much better
localisation, namely in spacelike cones, when viewed in front of suitable
``infravacuum'' backgrounds. These background states coincide, essentially,
with a class of states introduced by Kraus, Polley and Reents as models for
clouds of infrared radiation.
