It seems like if those things really keep fleas away, the fleas would just stay away from the neck. Is there actual science behind them?
Yes, there is science behind flea collars. They release chemicals or natural oils that disperse across the pet’s skin, providing whole-body protection against fleas, not just around the neck.
Yes, flea collars release chemicals or natural oils that spread across the pet’s skin, providing whole-body protection against fleas, not just around the neck.