I recently bought a house about 7 months ago. My yard is graded so as the rest of the yards surrounding me dump all of their water runoff onto my property, and against my back foundation wall. I am now getting water seeping into a small crack into my garage and laundry room. Are professional services like epoxy injection my only options or is there a do it your self option that is just as good and effective? What is the most effective way for me to waterproof the exterior of my foundation. What is the best product you recommend?