This is the traditional approach and arguably the most reliable. Drain rods are flexible poles (usually made of polypropylene) that screw together. You feed them down the drain and physically push or twist the blockage apart.
Most outdoor blockages are within 30 cm of the surface. how to unblock outdoor drains
A standard "Universal Drain Rod Set" (usually 6-10 poles). They are cheap, reusable, and effective. Avoid "one-piece" plastic snakes; they are too flexible to generate the force needed for outdoor drains. This is the traditional approach and arguably the
Grease, fat buildup, silt, and fully compacted mud. Cost: Medium to High (Requires a pressure washer + ~$50 attachment). Skill Level: Intermediate. Most outdoor blockages are within 30 cm of the surface
To unblock an outdoor drain, you need to locate the blockage. Check the drain for any visible signs of blockage, such as leaves or debris. If you can't see any blockage, try to determine where the water is accumulating.