Woolworths chief executive Brad Banducci says collectables programs are worth the effort for retailers even though they trigger poor customer behaviour and have been labelled environmentally irresponsible. 

• Coles and Woolworths have come under fire for promoting plastic collectables, while simultaneously removing single-use plastic bags  
• The promotions are helping to attract customers and boost sales amid an unprecedented decline in spending in supermarkets. 
• Coles' Little Shop 1 promotion was successful last year, boosting like for like sales by 5.1 per cent.