Get squatters out of the house? (6)
I believe the answer is:
unseat
'get' is the definition.
The answer and definition can be both to do with contact as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for unseat that I've seen before include "Remove from power" , "Dislodge from saddle" , "Get out of office" , "Remove from horse (or house?)" , "Cause to fall from the saddle" .)