I think I have Hemlock in my garden. I find all the different umbells rather confusing but it does look like it, and it smells like aniseed. I have in the past happily chopped it down and chucked it on the compost, having no idea what it was, but a friend is helping with the garden and suggested it could be hemlock. Having a quick look online it says the stems remain toxic for three years, and the roots are the most poisonous part. I have a dog who eats anything, and hens who forage, so I want to remove it carefully and have no idea how to then safely dispose of it so that it poses no risk to humans or wildlife. Can I bag it and bin it?