Grimer's best moveset in Pokémon GO is Poison Jab and Sludge Bomb, with 10.26 damage per second, and it can deal 153.3 damage before Grimer faints. This is true when battling in neutral weather.
All Grimer movesets ranked
Here is a complete list of Grimer movesets in Pokémon GO, ranked by their DPS and TDO. You can change the weather and the opposing Pokémon.
|1.||Poison Jab||Sludge Bomb||10.26||153.3||20.2|
|5.||Poison Jab||Mud Bomb||8.06||120.4||15.9|