Take an empty trigger spray container, such as is widely available in the
> house and garden shed. Rinse out the Flash or Mr Muscle it contained, and
> dry out (maybe run some meths through it to remove water). Then fill with
> white spirit. This is invaluable for a range of tasks, ...
I use these with degreaser e.g. Deb Jizer or Comma Hyperclean. They don't last forever. Either the pump gives out or the plastic degrades causing the bottle to split or break up.
Richard