Independent Cllr Johno O'Malley has queried how much the council is spending yearly on its Japanese knotweed eradication programme.
He asked: "How much do Mayo County Council spend on bringing in a company to inject Japanese knotweed? I want to know because I know that it is a pure farce, no need at all to bring in a company - it can be sprayed one spray and gone to the root forever and I think the company are ripping you off."
Director of services for Mayo County Council, Tom Gilligan, refuted Cllr O'Malley's claim saying: "The last two years we have a budget of €75,000, it is not enough, we have a serious issue. We do go to tender, there is a protocol and criteria that has to go through, I wish there was more there in the budget to go through it."