brushed motor cleaner

[Npdp72]

Hi,
Back in the day I used to clean brushed motors with aerosol motor cleaning spray, I think I used the trinity product.
I'm wanting to run some of my old brushed motors again so I started looking for a similar product but can't find anything.
I guess it was just electrical switch cleaner repackaged.

So, what do people use these days and where can I buy it please?
Thanks.