Buy Gruntz Online. Gruntz is one of the runtz strain cultivated by Gashouse. They’ve got a pretty good track record with their runtz strains. Another of Gashouse runtz strain is white runtz. Gruntz has been around the scene for awhile. With one of the best aromas you can get from strain gruntz smells as it tastes. With a sleepy effect you know you’ll be gone for days. This strain is good for those dealing with depression and anxiety. Buy Gruntz online from your #1 online dispensary and get it delivered within 3 days.