The Robin Red Margin Mix 2kg from SONUBAITS is packed with herbs, including Haith's Robin Red. An ingredient that has been helping to catch big carp around the world for a number of years! Mixing guidelines: Robin Red Margin Mix is easy to mix. Empty the 2kg bag of groundbait into a round mixing bucket, fill a 2-pint maggot tray with water, pour onto the groundbait and mix well, then let it rest for 30 minutes, during which time the water will be absorbed into the feed. ground bait. Then for the best result; To get rid of any lumps and create an even consistency, run the groundbait through a riddle and it's ready to use. When fishing, sun and wind can dry out the ground food a bit, to combat this you can cover the mixed ground food with a damp towel or if it dries out just add a little more water and mix again.