I do exactly what oceanskipper does. 2 chains, rotate them.
Have a fresh one ready to go when the one in use runs out of wax.
only difference is I run a homebrew wax mixture. I am also not a massive putoline fan due to the black gunk.
Once you’ve shelled out for the fryer (which shoul dbe under 20 quid) it is extremely cost effective
I tend to wax multiple bikes’ chains together while the deep fat fryer is on.
I spray on a bit of water displacement lube (e.g. GT85) after wet rides to keep surface rust at bay
I’m never going back to lube unless in emergencies or when away from home for long periods