During the day or night trip to the bathroom I am in the habit of (using a 20 oz. pop bottle of water) pouring water in (third of bottle at a time) sealing bottom, squishy the bag around and dumping it out and doing it two more times. It'll get all that goo out of your bag.
Unless it's not convenient (not private restroom?) doing this method can help minimize the problem.
Otherwise I would try regulating with that fiber stuff you put a teaspoon in a glass of water. Mirilax or the generic store brand.
Just my thoughts, mtnman.