I did a topic on this issue a while back, and for my fix I used a piece of a black heavy duty zip tie. I cut the other end at an angle to form a point and pushed it into the roadbed, then glued it.
Based on this suggestion, I am now considering a sort of hybrid approach.
I am considering using the piece of black Zip Tie, cut at a sharp angle, then pushed into the wood tie, then anchored in place with the JB-Weld.
Sounds like a pretty iron clad plan.
But of course the proof will be in the actual doing.