I worked in staging at a local track for a lot of years.........the owner had a reputation for being frugal.
I'm trying to be kind because I liked the guy......cheap skate or not.
But he mixed rubber cement with some kind of solvent .......and it may have been gasoline for all I know ....but he sprayed it on the starting line with a plain garden sprayer and it seemed to work pretty well.
Once the solvent ( what ever it was ) evaporated , it left a very tacky surface.
I used Firestones and later Phoenix's and they never gave me a reason to look for another brand.