With great caution,fish.
When I used to wax my traps,I used a container just for my wax.
I liked to wax 1 trap at a time.When doing this,it is a slower process,but you can get by with a smaller container,and less wax.
Because of waxes flammabilty,I used a double boiler process.I had a large water container that went directly over my heat source.The container with my wax,was placed in the water filled container.The wax is heated to where it is almost smoking,the trap was then placed in the wax.It was left in the hot wax,till it reached the same temperature as the wax.After you do this,you will better understand what I mean.After the trap is pulled from the wax,I would shake it,then hang it up to dry.
Waxing this way ,gives you a thin uniform coating of wax.
Wear safety glasses and have a board large enough to cover the entire wax container.That way if the wax catches on fire,place the board on top--to smother the flames.
Good Luck,
Tom