If the hair stays wet after dripping the repellent, it may be because it dripped onto the hair. Generally, the hair will dry on its own after a while. Another possibility is that the cat licked the area where the repellent was dropped. Therefore, the hair will always be wet. It is best to wear an Elizabethan collar on the cat at this time to prevent the cat from being poisoned.
Tips:
Cat external anthelmintics must be dripped on the skin, not on the hair, otherwise it will affect the repellent Insect effect.