When to use a bait dip? Baits dips tend to be mainly used in winter and this mainly because the carp are much less active in searching out food, they have already stored up enough fatty reserves to last them right through the winter so in most instances they don't have any real need to be on the constant look out for food as they are through the rest of the year. Due to this on many waters it is a big advantage to have your bait oozing of flavour and smell "attraction"