If you have sap dripping from your trees, there are a few things you can do to try to stop it. First, you can prune the branches that are dripping sap. This will reduce the amount of sap that is produced. Second, you can wrap the trunk of the tree with something like burlap or plastic wrap. This will help to prevent the sap from flowing out of the tree. Finally, you can apply a sealant to the bark of the tree. This will create a barrier between the sap and the outside world, which should help to prevent it from flowing out of the tree.