On 21/01/2019 23:53, Roger Hayter wrote:
ss wrote:

I have a couple of wall light switches that are stiff (rocker type), is
it worth or safe to spray the mechanism with say graphite lubricant or a
case of just replace them.

I'd try a bit of silicone spray, but it is probably bent or worn little
pieces of metal or the plastic they bear on (rather than increased
friction due to dirt etc) so if it wasn't cured I'd replace it.

+1

I do sometimes find pull switches in the bathroom getting sticky from
debris from the lath and plaster ceiling. A spray plus exercise very
often clears them.