i recentley found ticks on my yorkie bentley and i rushed to the pet store picked up a shampoo for ticks that was recommended to me and immediatley went home and used it on bentley picked out the ticks and i also sprayed my house with a fogger, he was clean to my understandings but a couple days later my girlfriend found just one and it so happened that, that same day he was let out in the backyard to play im thinking thats where he got them from, idk y now??? hes always played out since we first moved here. can anyone please help us on how to keep him clean and prevent bentley from getting ticks again? also, can the ticks leave scars on the skin? i would really appreciate it if someone can write back soon thanks.