"My husband owned his own A/C business for a long time....he said everything on here is the PROPER way to do this.....do it yourself, will make unit not work so hard and you save $ by not paying the A/C company!" Our electric bill rose to $430 two years ago and a simple A/C cleaning lowered it to $150. Totally re-pinning this.
Concrete gap filler. Never weed again!! Another pinner said, "I did this on my patio and driveway. Love it! This is what parks and public places use. Available at Lowes and Home Depot in different colors in the concrete dept.