Asda and Sainsbury's have withdrawn certain batches of cereal from sale because small insects have been found in boxes.

Asda has recalled Asda Variety Cereal Pack (6 mini packs) with best before dates of February, March and April 2008.

The affected Sainsbury's product is Sainsbury's Breakfast Cereal Selection Packs - Honey Nut Cornflakes Pack, 225g, with best before dates of February and March 2008.