Frontline will kill ur ticks eventually but nothing can stop them attatching
The other thing u can do is smother the head (bit embedded in dog) with vasaline and will suffocate n drop off.
O tom hooks r the best very easy to use.
i have found most ticks tend to like the eyebrow area o keep ckin, if he has one there he may have another elsewhere
Rona dont worry if u sqeeze a tick the worst that'll happen is they will die with the head embedded. They r not poisoness but the eurapean ticks docarry tick bourne diseases. We r lucky in the uk not to have them.....yet!