Frogs can be injured or killed by salt. Frogs, like slugs, have very moist skin, which generates a burn-like reaction when they come into touch with salt or a saltwater solution.
Excessive salt dehydrates an animal by removing water from its cells and disrupting its internal homeostasis, resulting in acute dehydration. When frogs become dehydrated, they die. When frogs come into contact with a saltwater solution sprayed on the pavement or plants surrounding your house, their feet and legs are burned. Salt is a quick technique to kill frogs, despite the fact that there are other methods.