The product The Garden Baker is talking about is Safety Seal (wax).
https://www.nycake.com/safety-seal-by-ingenious-edibles-cbl024
It’s rather expensive, albeit, convenient. I recently placed some wire covered flowers into a cake, and I used good ole fashioned parowax. Used for covering/sealing homemade jars of jams, salsa, etc. Cheap, found in most grocery stores. And parowax is food safe. I used a small tin can in a pot of simmering water to melt the wax. Dip in your covered wires twice, letting dry in between. Literally dries in seconds. No messy clean up using a tin can.
Hope this helps.
Creativity is God's gift to us. Using our creativity is our gift back to God. Clarky's Cakes 😎