Betaine has a strong taste and can attract food. It works well in warm seasons, but it will weaken in winter, because the activity and appetite of fish will decrease because of the low temperature. Betaine is not strong enough, so it is better to replace it with a small medicine with fishy smell.

Betaine can be mixed with grain flour, and 5-1000g bait can be added. The effect is also good when used alone or in combination with animal protein.

Betaine is a methyl donor with high efficiency, which can promote fish to take the bait, but the dosage should be controlled, not too much. The same is true for other small medicines, and it is not advisable to overdo it. There are many kinds of small herbs, which are selected according to fish's preferences and seasonal characteristics. Choose the most interesting fish. At the same time, considering the seasonal factors, it can be light when the temperature is high, and strong or fishy when the temperature is low. As a special nest material, glutinous rice can be used all year round, because the smell of wine has a strong impact even in winter, which can stimulate fish to open their mouths.