Hadn't heard of the one you mentioned so just did a review search and people have used it to clean things lol.
I first heard about Retardex through a magazine article years ago and ds used it when he had a fungal infection in his mouth(after antibiotics for crohns) The actual mouthwash doesn't really taste of anything (which is strange) but a small sachet of mint flavouring is provided if you prefer the minty taste.
Maybe look at a few of the reviews for it?