It should make it more comfortable for them. If painful bowel movements are an issue, don't forget that some laxatives will provide some lubrication, to ease the movement. Remember that ALL laxatives are drugs. They should be taken with care, and monitored closely, for side-effects. Call your doctor at the first sign of any problems.
Children like to be praised for everything.
Don't hesitate to encourage all the time. It's very important that both parents work as a team when handling their child's encopresis. Your child must see that you both agree on treatment and following schedules. You have to be careful, though, that you don't go overboard and make them think that all pills are candy. These are only a few suggestions for your consideration.