Where do you find Grimer in Pokemon Ruby?

You can find Grimer in Route 112 in Pokemon Ruby.

Here's how to find it:

* Location: Route 112, the path leading to Slateport City.

* Encounter: Grimer appears rarely in the tall grass. You'll need to walk around a bit and be patient.

* Tip: Using a Pokemon with the Aroma Trap ability can increase your chances of encountering a Grimer.