The XL Crumbs are great value for money and can be used on there own or to bulk out a more expensive groundbait mix. The brown helps to turn any groundbait into a light and fluffy mix for fishing the feeder. The red works best in highly coloured water or to dye your chosen groundbait.
Lots of match anglers use the Pure White Crumb as a substitute for liquidised bread as it has a far lower food content and will see you catch for longer. It is also over wet it to make it heavier than liquidised bread or slightly dampen so the dry to mix is more active and hangs in the water.