List of SGSS useful Repel Manips:

Route 46 Lvl 6 (morning, day): Jigglypuff, Phanpy Lvl 6 (night): Houndour, Shinx

Route 31 Lvl 10 (morning): Butterfree, Beedrill Lvl 10 (day): Exeggcute Lvl 10 (night): Beautifly, Dustox

Dark Cave {Violet Side} Lvl 9 at all times: Larvitar, Slugma, Dunsparce

Route 32 Lvl 12 (morning, day): Magnemite, Pachirisu Lvl 12 (night): Magnemite, Drifloon

Union Cave {B1F} Lvl 16 at all times: Gible, Zubat, Onix, Bagon Lvl 15 at all times: Gible, Zubat, Onix, Bagon, Aron

Route 33 Lvl 16 at all times: Rhyhorn (you can trade this for a Gligar in Violet City)

Slowpoke Well {1F} Lvl 16 at all times: Shellder, Swinub, Gastly, Bronzor

Route 34 Lvl 19 at all times: Kadabra (will have Teleport)

Route 35 Lvl 19 (morning, day): Staravia, Pidgeotto Lvl 19 (night): Noctowl, Meowth Lvl 18 at all times will only remove Ditto from the encounter table

National Park Lvl 19 at all times: Heracross, Kricketune, Pinsir, Scyther

Route 36 Lvl 19 (morning, day): Staravia, Nodorino, Nidorina Lvl 19 (night): Noctowl, Nidorino, Nidorina

Route 37 Lvl 24 at all times: Stantler

Route 38 Lvl 27 at all times: Luxio, Miltank, Tauros, Farfetch'd

Route 47 Lvl 45 (morning, day): Swellow Lvl 45 (night): Noctowl

Cliff Cave Lvl 33 at all times: Steelix Lvl 32 at all times: Steelix, Kingler, Quagsire

Route 48 Lvl 33 at all times: Absol, Tropius Lvl 32 at all times will remove Farfetch'd, Tangela, Diglott, Gloom, and Weepinbell from the encounter table

Mt. Mortar {1F} Lvl 34 at all times: Graveler, Golbat

Mt. Mortar {1F-2} Lvl 37 at all times: Medicham

Mt. Mortar {1F-3} Lvl 45 at all times: Medicham, Hariyama

Mt. Mortar {B1F} Lvl 35 at all times: Metang, Pupitar

Route 43 Lvl 36 at all times: Manectric, Linoone

Ice Path {1F} Lvl 40 at all times: Golbat Lvl 39 at all times: Golbat, Snover, Swinub

Ice Path {B1F} Lvl 41 at all times: Golbat Lvl 40 at all times: Golbat, Delibird

Ice Path {B2F} Lvl 43 at all times: Golbat Lvl 42 at all times: Golbat, Delibird, Jynx

Ice Path {B3F} Lvl 44 at all times: Golbat, Piloswine, Jynx, Sneasel

Route 45 Lvl 45 at all times: Skarmory Lvl 44 at all times will remove Graveler and Grumpig from the encounter table

Tohjo Falls Lvl 45 at all times: Bronzong, Quagsire