My husband and I have lived in our home for 12 years. It's an older ranch style house (built in 1962) and never had any problems like this. Today (7/26/2013) I saw green sap dripping through one of the walls in my family room and was puzzled where it was coming from. My husband tried to look around to se if he could find the source but it's a mystery to us. We were so shocked, we forgot to take pictures before leaving the house this morning. Has anyone experienced this before? What should we do? I believe we need to consult someone but we're not sure who. Please help!