Plastic bags from other chains will also be collected, but buyers will only be refunded for Ocado bags returned.
The used bags are sent to a recycling plant exactly where they turned into are pellets used to make new bags.
The shift comes as Ocado proceeds to gain from virus-induced “keep at property” orders.
Final month it documented that complete sales soared by a third to £2.3bn for the 12 months to November. The enterprise posted pre-tax losses of £44m, down from £215m previous 12 months.
This strong retail effectiveness was offset by enhanced investment in its robotic warehouse know-how enterprise, as very well as expending on selecting more team and retooling its site to cope with the surge in demand.
Ocado shares fell 1.7pc to £21.01 in afternoon buying and selling, valuing the company at £15.7bn.