Objective: To keep your dog's coat healthy,

Which of the following solutions is more sound in terms of naive physics reasoning?

Select from the following. -brush their fur twice a year, using a hair brush, to remove loose hair and prevent mats. -brush their fur twice a week, using a slicker brush, to remove loose hair and prevent mats.
brush their fur twice a week, using a slicker brush, to remove loose hair and prevent mats.