I don't think vinegar meets my definition of non-toxic.
The weeds are so close to my plants that the vinegar would affect the plant foliage too. Besides, I'm not sure that dying weeds look any better than live ones in a garden bed. I've used vinegar on the weeds in the pathways. They died down, looked awful, and then grew right back, as vigorous as ever. I think vinegar only kills the top growth and doesn't kill the roots effectively. I'm afraid there's no getting around the need to pull weeds.
Chelle, I really appreciate the detailed stretch instructions. You're doing ballet stretches. I did those for years decades ago. Maybe they're still in my muscle memory.