I prefer to play small pairs in late position if there are no raises. It is very hard to know where you are if there is a lot of betting action. Players with over cards will keep betting hoping that you will fold. Of course, if you hit trips, you are in business and if you do not try to keep the betting low and fold to aggression.
At a table where there is not much pre-flop action, I will play those pairs in early or middle position. I will fold them if there is a lot of pre-flop action.
Of course it really hurts when they hit and you are in the muck, but try to avoid wasting chips playing all small pocket pairs. Play them in late position and at tables with little pre-flop action.
They can be very profitable. All the best.