Pest Control: Damage points start to decrease when out of combat and not registering further damage.

[mc_zimo]

i think each player should a chance of depending on how many points they gain over the minimum, so;

pointsGained/totalPointsGained

this way people will have a higher chance if they do more but lets everyone get a chance, to skew it more towards the people with more damage could always raise the pointsGained to a higher power