[Gautama]

Are there any grass-only weedkillers on the market? By this I mean, they kill only grass (ie monocots) and not other plants (ie dicots).
I know there are a plethora of selective weedkillers that work in the reverse of what I want (e.g. SBK), but any that select grass only?

[Greengage]

you need a gramicide something with Clethodim in it but i doont know if you can get anything off the shelf you need a qualifacation in herbicide and pesticide sparying (PA1 andPA2) but then again this is Ireland.