Send him this. I confronted the gardener, he said... Oh he only does it once and only on the gravel which is not true. And that other people also don't like it but it is not that harmful... I told him t is, it's water soluble and it eventually rains on us and it goes everywhere Then he started telling me how microplastics is in everything... I'm like "so yeah, let's just add more poison to it all and kill more life".