Some councils accept pizza boxes in kerbside recycling bins, and others do not. If pizza boxes are completely free of food the cardboard can be recycled. However due to the high contamination rate of pizza boxes, many councils advise residents not to include them in the recycling as the food contamination can often make it very difficult to recycle other paper and cardboard items.
Pizza Boxes Disposal
Will SUEZ accept my pizza boxes?
What else can I do with my pizza boxes?