Drip Rite Irrigation Products offers quality supplies for the homeowner, landscape contractor, and commercial grower at discount prices. We also feature the award-winning "ADD-IT" proportioning fertilizer dispenser, essential for any drip irrigation system. And recently, we introduced the new Green Machine fertilizer dispenser. Both dispensers work equally well in a conventional sprinkler system. Take the guess work out of fertilizing, and let the water do the work for you. Our web site is located at http://DripIrr.com, where you can find our entire design manual and product catalog.