On Friday, 6 April 2018 15:48:52 UTC+1, Dan S. MacAbre wrote:
The answer is most likely no, but I was wondering if (minimal expansion)
expanding foam will take rawlplugs (my own generic name for the things).
It's only for holding skirting boards to the wall, so not really a
tough job.

I also discovered that drinking straws can be used as a nozzle for this
stuff when your old one is solidly blocked. Although I know that there
is more than one diameter for these things.

Plastic drinking straws ! I've just signed a petition against plastic drinking straws.