As a thought experiment, if we could imagine a simple switch of all atmospheric methane to carbon dioxide, it would buy an enormous amount of time in which to engineer a zero-carbon transition. A simple, if inelegant, solution is to reduce the national herd size. DúlaBio recognises that the Irish climate and landscape is uniquely suited to livestock production and that Irish farmers are embattled and under duress in today's economy. However, we are also aware that continued intensification is not sustainable and that conventional practices in agriculture in Ireland will be increasingly scrutinised for their damaging effects on biodiversity, soil health and soil carbon. If the scale of the methane reductions suggested here can be replicated, direct action on ruminant methane sources is achievable almost immediately, and without drastic cuts to the national herd size - but it must be done in cooperation with farming practices that pursue absolute reductions in GHG emissions rather than efficiency gains.