
I have always been taught to grasp the head of the tick and pull straight up, with no twisting. I use tweezers and don't know how they differ from special-purpose tick removers in terms of use; but the "upward and outward" motion as far as the tick is concerned should be the same; otherwise removing them is not being done correctly.
"If using tweezers, grasp the tick as close to the host's skin as possible and pull upward with steady, even, pressure. Do not twist or jerk the tick as this may leave the mouth parts embedded, or cause the tick to regurgitate infective fluids. Remove any embedded mouth parts with tweezers. If using a bespoke tick-removal tool, follow the manufacturer's instructions. "
and with regard to using any noxious stuff on the tick to remove it,
"Do not use 'petroleum jelly', any liquid solution, freeze or burn the tick, as this will stimulate it to regurgitate its stomach contents, increasing the chances of infection."
More into from the site below:
http://www.tickpreventionweek.org/remove/