Yes. Nualgi is a natural product with no harmful chemicals like algaecides. It is safe for dogs, amphibians, birds, plants and all other inhabitants around your Koi pond and water garden. Nualgi is non-toxic and not harmful if ingested. If you or a child did consume the formula and is having any issues, please consult your primary physician. If it gets in your eyes, rinse and wash with water immediately.