How to shiny hunt Grimer.

The fastest known Grimer shiny hunt is Overworld spawn at Kanto Power Plant in Let's Go Pikachu — roughly 3.0 hours of active hunting. Every other game and route is ranked below.

Grimer

73 shiny-huntable encounters

Best huntOverworld spawn

Kanto Power Plant

Let's Go Pikachu

3.0 hr

estimated time to shiny

Encounter rate: 100%
Shiny odds: 1/1365
Encounters: 1,365
Level: 37–42

Catch Combo + Lure stacks to roughly 1/273 with the charm.

#23.0 hr

Pokemon Mansion 1f

Let's Go Pikachu

Method: Overworld spawn
Encounter rate: 100%
Shiny odds: 1/1365

Catch Combo + Lure stacks to roughly 1/273 with the charm.

#33.0 hr

Pokemon Mansion 2f

Let's Go Pikachu

Method: Overworld spawn
Encounter rate: 100%
Shiny odds: 1/1365

Catch Combo + Lure stacks to roughly 1/273 with the charm.

#43.0 hr

Pokemon Mansion 3f

Let's Go Pikachu

Method: Overworld spawn
Encounter rate: 100%
Shiny odds: 1/1365

Catch Combo + Lure stacks to roughly 1/273 with the charm.

#	Game	Location	Method	Rate	Shiny odds	Encounters	Est. time
1	Let's Go Pikachu	Kanto Power Plant	Overworld spawnLv 37–42	100%	1/1365	1,365	3.0 hr
2	Let's Go Pikachu	Pokemon Mansion 1f	Overworld spawnLv 39–44	100%	1/1365	1,365	3.0 hr
3	Let's Go Pikachu	Pokemon Mansion 2f	Overworld spawnLv 39–44	100%	1/1365	1,365	3.0 hr
4	Let's Go Pikachu	Pokemon Mansion 3f	Overworld spawnLv 39–44	100%	1/1365	1,365	3.0 hr
5	Let's Go Pikachu	Pokemon Mansion B1f	Overworld spawnLv 39–44	100%	1/1365	1,365	3.0 hr
6	Black 2	Castelia Sewers	SurfingLv 5–15	100%	1/2731	2,731	9.1 hr
7	White 2	Castelia Sewers	SurfingLv 5–15	100%	1/2731	2,731	9.1 hr
8	Black 2	Castelia Sewers Unknown Area 38	SurfingLv 5–15	100%	1/2731	2,731	9.1 hr
9	White 2	Castelia Sewers Unknown Area 38	SurfingLv 5–15	100%	1/2731	2,731	9.1 hr
10	Black 2	Castelia Sewers	Super RodLv 40–70	100%	1/2731	2,731	13.7 hr
11	White 2	Castelia Sewers	Super RodLv 40–70	100%	1/2731	2,731	13.7 hr
12	Black 2	Castelia Sewers Unknown Area 38	Super RodLv 40–70	100%	1/2731	2,731	13.7 hr
13	White 2	Castelia Sewers Unknown Area 38	Super RodLv 40–70	100%	1/2731	2,731	13.7 hr
14	Black 2	Castelia Sewers	Rippling waterLv 5–20	95%	1/2731	2,875	17.6 hr
15	White 2	Castelia Sewers	Rippling waterLv 5–20	95%	1/2731	2,875	17.6 hr
16	Black 2	Castelia Sewers Unknown Area 38	Rippling waterLv 5–20	95%	1/2731	2,875	17.6 hr
17	White 2	Castelia Sewers Unknown Area 38	Rippling waterLv 5–20	95%	1/2731	2,875	17.6 hr
18	Black 2	Castelia Sewers	Rippling water (fishing)Lv 40–60	80%	1/2731	3,414	24.7 hr
19	White 2	Castelia Sewers	Rippling water (fishing)Lv 40–60	80%	1/2731	3,414	24.7 hr
20	Black 2	Castelia Sewers Unknown Area 38	Rippling water (fishing)Lv 60	80%	1/2731	3,414	24.7 hr
21	White 2	Castelia Sewers Unknown Area 38	Rippling water (fishing)Lv 60	80%	1/2731	3,414	24.7 hr
22	Crystal	Kanto Route 17 Night, Morning, Day	Walking in grassLv 29–33	95%	1/8192	8,623	26.3 hr
23	Crystal	Kanto Route 18 Night, Day, Morning	Walking in grassLv 26–29	95%	1/8192	8,623	26.3 hr
24	Gold	Celadon City	SurfingLv 15–24	90%	1/8192	9,102	30.3 hr
25	Silver	Celadon City	SurfingLv 15–24	90%	1/8192	9,102	30.3 hr
26	Crystal	Celadon City	SurfingLv 15–24	90%	1/8192	9,102	30.3 hr
27	HeartGold	Celadon City	SurfingLv 15–20	90%	1/8192	9,102	30.3 hr
28	SoulSilver	Celadon City	SurfingLv 15–20	90%	1/8192	9,102	30.3 hr
29	Gold	Kanto Route 16 Night, Morning, Day	Walking in grassLv 26–28	80%	1/8192	10,240	31.3 hr
30	Silver	Kanto Route 16 Night, Day, Morning	Walking in grassLv 26–28	80%	1/8192	10,240	31.3 hr
31	Crystal	Kanto Route 16 Night, Day, Morning	Walking in grassLv 26–28	80%	1/8192	10,240	31.3 hr
32	Gold	Kanto Route 17 Night, Morning, Day	Walking in grassLv 27–29	80%	1/8192	10,240	31.3 hr
33	Silver	Kanto Route 17 Night, Morning, Day	Walking in grassLv 27–29	80%	1/8192	10,240	31.3 hr
34	Gold	Kanto Route 18 Night, Morning, Day	Walking in grassLv 26–28	80%	1/8192	10,240	31.3 hr
35	Silver	Kanto Route 18 Night, Day, Morning	Walking in grassLv 26–28	80%	1/8192	10,240	31.3 hr
36	Alpha Sapphire	Fiery Path	Horde encounterLv 8	35%	1/1365	3,900	32.5 hr
37	Scarlet	East Province Area Two — Near Town Morning	Overworld spawnLv 19–42	9.09%	1/1365	15,017	33.4 hr
38	Violet	East Province Area Two — Near Town Morning	Overworld spawnLv 19–42	9.09%	1/1365	15,017	33.4 hr
39	Scarlet	West Province Area Two — Near Town Morning	Overworld spawnLv 19–42	9.09%	1/1365	15,017	33.4 hr
40	Violet	West Province Area Two — Near Town Morning	Overworld spawnLv 19–42	9.09%	1/1365	15,017	33.4 hr
41	HeartGold	Kanto Route 17 Night, Morning Radio: Off · Night, Morning	Walking in grassLv 27–29	40%	1/8192	20,480	2.6 days
42	SoulSilver	Kanto Route 17 Night, Morning Radio: Off · Night, Morning	Walking in grassLv 27–29	40%	1/8192	20,480	2.6 days
43	HeartGold	Kanto Route 16 Radio: Off · Night Night	Walking in grassLv 26–28	30%	1/8192	27,307	3.5 days
44	SoulSilver	Kanto Route 16 Radio: Off · Night Night	Walking in grassLv 26–28	30%	1/8192	27,307	3.5 days
45	HeartGold	Kanto Route 18 Radio: Off · Night Night	Walking in grassLv 26–28	30%	1/8192	27,307	3.5 days
46	SoulSilver	Kanto Route 18 Radio: Off · Night Night	Walking in grassLv 26–28	30%	1/8192	27,307	3.5 days
47	LeafGreen	Pokemon Mansion 1f	Walking in grassLv 28–30	30%	1/8192	27,307	3.5 days
48	LeafGreen	Pokemon Mansion 2f	Walking in grassLv 28–30	30%	1/8192	27,307	3.5 days
49	LeafGreen	Pokemon Mansion 3f	Walking in grassLv 28–30	30%	1/8192	27,307	3.5 days
50	LeafGreen	Pokemon Mansion B1f	Walking in grassLv 28–30	30%	1/8192	27,307	3.5 days
51	Black 2	Castelia Sewers	Walking in grassLv 15–17	10%	1/2731	27,310	3.5 days
52	White 2	Castelia Sewers	Walking in grassLv 15–17	10%	1/2731	27,310	3.5 days
53	Black 2	Castelia Sewers Unknown Area 38	Walking in grassLv 15–17	10%	1/2731	27,310	3.5 days
54	White 2	Castelia Sewers Unknown Area 38	Walking in grassLv 15–17	10%	1/2731	27,310	3.5 days
55	HeartGold	Johto Safari Zone Marshland Safari Blocks: Inactive	SurfingLv 15–17	30%	1/8192	27,307	3.8 days
56	SoulSilver	Johto Safari Zone Marshland Safari Blocks: Inactive	SurfingLv 15–17	30%	1/8192	27,307	3.8 days
57	Sapphire	Fiery Path	Walking in grassLv 15–16	25%	1/8192	32,768	4.2 days
58	Diamond	Sinnoh Route 212 East Towards Pastoria City Radar on	Walking in grassLv 18–20	22%	1/8192	37,236	4.7 days
59	Pearl	Sinnoh Route 212 East Towards Pastoria City Radar on	Walking in grassLv 18–20	22%	1/8192	37,236	4.7 days
60	Platinum	Sinnoh Route 212 East Towards Pastoria City Radar on	Walking in grassLv 23–26	22%	1/8192	37,236	4.7 days
61	Scarlet: Indigo Disk	Coastal Biome	Overworld spawnLv 10–60	1.52%	1/1365	89,803	8.3 days
62	Violet: Indigo Disk	Coastal Biome	Overworld spawnLv 10–60	1.52%	1/1365	89,803	8.3 days
63	XD: Gale of Darkness	Phenac City Stadium	Snag battle (soft reset)Lv 23	100%	1/8192	8,192	8.5 days
64	HeartGold	Johto Safari Zone Marshland Safari Blocks: Inactive · Morning, Day	Walking in grassLv 17	10%	1/8192	81,920	10.4 days
65	SoulSilver	Johto Safari Zone Marshland Safari Blocks: Inactive · Morning, Day	Walking in grassLv 17	10%	1/8192	81,920	10.4 days
66	FireRed	Pokemon Mansion 1f	Walking in grassLv 28	5%	1/8192	163,840	20.9 days
67	FireRed	Pokemon Mansion 2f	Walking in grassLv 28	5%	1/8192	163,840	20.9 days
68	FireRed	Pokemon Mansion 3f	Walking in grassLv 28	5%	1/8192	163,840	20.9 days
69	FireRed	Pokemon Mansion B1f	Walking in grassLv 28	5%	1/8192	163,840	20.9 days
70	Ruby	Fiery Path	Walking in grassLv 14	2%	1/8192	409,600	52.1 days
71	Emerald	Fiery Path	Walking in grassLv 14	2%	1/8192	409,600	52.1 days
72	FireRed	Celadon City	Super RodLv 30–40	1%	1/8192	819,200	170.7 days
73	LeafGreen	Celadon City	Super RodLv 30–40	1%	1/8192	819,200	170.7 days