Do not wear a collar when using Bioline's all-in-one anthelmintic. External anthelmintic drugs in the collar are generally very toxic to cats, and if the collar is in a moist state, it is easy to release a large amount of anthelmintic drugs in a short period of time, leading to drug poisoning. For the health of the cat, it is recommended not to wear a collar after using the all-in-one internal and external anthelmintic drug of BRIAN.

How often should cats be dewormed externally:

1. First of all, preventive external deworming is recommended for cats once a month. Generally, cats' external deworming is related to the season. In summer, it is recommended to perform external deworming on cats once a month. In winter, it can be appropriately extended to once every February to March. In addition, the frequency of deworming can also be appropriately adjusted based on the cat's frequency of going out, living environment, etc. If the cat often goes out to play in the woods, grass, etc., or the living environment is messy, humid, etc., the frequency of deworming can be appropriately increased.

2. Secondly, because the common external parasites in cats have relatively strong reproductive capabilities, it is recommended that cats be dewormed externally once a month. For example, for common fleas, female fleas can usually lay about 50 flea eggs a day, and flea eggs can develop into new fleas within 21 days. At the same time, when the cat's external parasites are in the growth stage, the owner cannot observe them with the naked eye, so it is recommended to deworm the cat regularly for prevention.