Lidl customers will see some changes when they buy milk from the supermarket from this month.
The retailer will be replacing green caps with clear caps on semi-skimmed and organic fresh milk. However, red tops and blue tops - used for skimmed and whole milk - won't be included in the trial.
The changes were being rolled out from Monday and will be available in all stores by November 21. Lidl says the new clear caps are more environmentally friendly than the old green ones, as they will be recycled to create milk bottles, reports The Mirror.
It is estimated that 60 tonnes of recycled High-Density Polythene per year will be turned back into food-grade packaging as a result. The initiative follows a successful four-week trial with Müller earlier this year.
Scott Davey, senior buying director, said: "We remain committed to supporting our customers in helping them make more sustainable shopping decisions on a daily basis. Customer feedback during the trial was overwhelmingly positive and we are thrilled to be making this change permanent across Lidl stores.
"In addition, this move will help us achieve our goal of making more of the plastic we use circular and fit to be repurposed time and time again."
In June, Waitrose confirmed it was ditching coloured tops in favour of clear ones, in collaboration with Müller. Aldi also said it was switching to clear lids instead of green tops in August, as part of a trial across stores in Cheshire, Manchester and Liverpool.
Liam McNamara, Muller Milk & Ingredients commercial director, said: "Everyone is thinking more about what they buy, the nutritional benefits, the value it represents and the packaging used. We want to be the partner of choice for our customers, we recognise the commitments they are making in this area, and following a successful trial period, then this is another step we can offer."