How do you get rid of the thing on route 36 in Pokemon soulsilver?

You're likely referring to the Snorlax blocking the path on Route 36 in Pokemon SoulSilver.

Here's how to get rid of it:

1. Talk to the Old Man: He's located just to the left of Snorlax, near the entrance to the route.

2. Get a Poké Flute: The Old Man will tell you about a "Poké Flute" and how it can wake Snorlax.

3. Find the Poké Flute: You can get it by talking to the little girl in the Goldenrod City Department Store.

4. Use the Poké Flute: Once you have the flute, go back to Snorlax and use it on him. He will wake up and leave the path.

Now you can continue your journey!