(Activated Amitrole, Amitrole 4L)
- non-selective, ie generally kills most plants, leaves bare ground. Sites often colonised by more weeds
- acts systemically i.e will spread through entire plant to roots
- moderate toxicity, but corrosive. Moderate soil residue, apply with care. Replant sites only after seedlings appear naturally
- preferred for several hard-to-kill species, not otherwise recommended
- useful for stem/stump treatment
- available from garden centres agricultural supply stores.