Chem 4 Sticky Crumble Delivery in Los Angeles.  Stick AF Cannabis crumbles show how it is done right. These crumbles are a long-time favorite THC concentrate of consumers. You can sprinkle some on top of your bowl, or mix it in with your joint or blunt and get a high that will grasp you vigorously. Chem 4, often known as “Chemdawg 4 OG,” produces an uplifting, euphoric head high that leaves you feeling invigorated and light-headed. Chem 4 OG is best used throughout the day or as a wake-and-bake strain, and should not be smoked at night due to its stimulating qualities. Chem 4 OG is good for treating people suffering from exhaustion, tension, and depression because of its powerful effects.