Hi-Yield Garden, Pet, and Livestock Dust does not specifically mention collards on the product label. You could potentially use a product such as Sevin Dust instead. You may view the full product label here.
Hi-Yield Garden, Pet, and Livestock Dust has a three year shelf life if stored in a cool, dry place. Any product diluted with water, should be applied within 24 hrs of mixing.
No, Hi-Yield Garden, Pet, and Livestock Dust is not labeled to repel snakes. Please feel free to browse through our snake control selection of products here.