Someone has to do this as this was long out of date. I tested it and this is the best it can do. I wrote the whole thing even if it is QC rejected as it is not that long.
http://www.smogon.com/dp/pokemon/Dustox
[Overview]
Dustox is weak,has bad stats and has a Stealth Rock Weakness. It also has a Bad Movepool and is outclassed by nearly everything.
[SET]
name: Toxic Staller
move 1: Toxic
move 2: Roost
move 3: Light Screen / Sludge Bomb
move 4: Sludge Bomb / Bug Buzz / HP Fire
item: Leftovers
nature: Calm
ability: Shield Dust
evs: 252 HP / 4 SpA / 252 SpD
[SET COMMENTS]
Dustox has decent Special Defense and can make a decent Toxic Staller. Roost helps it recover health. Light Screen means that Dustox can take a hit. Sludge Bomb is your main attack.
[Additional Comments]
Hidden Power Fire is good for Steel Types whilst Bug Buzz gives you a secondary STAB.
[Team Options]
Dustox appreciates Rapid Spin to prevent Stealth Rock. Magneton can take out Steel Types who are immune to Poison. Any Physical attackers can take out Special Walls.
[Optional Changes]
Whirlwind can be used to Phaze out Stat uppers and U turn can be used to scout.
[Counters]
Steel types are good counters as they are immune to Poison. Anything with good Special Defense can take a hit and retaliate killing Dustox.
http://www.smogon.com/dp/pokemon/Dustox
[Overview]
Dustox is weak,has bad stats and has a Stealth Rock Weakness. It also has a Bad Movepool and is outclassed by nearly everything.
[SET]
name: Toxic Staller
move 1: Toxic
move 2: Roost
move 3: Light Screen / Sludge Bomb
move 4: Sludge Bomb / Bug Buzz / HP Fire
item: Leftovers
nature: Calm
ability: Shield Dust
evs: 252 HP / 4 SpA / 252 SpD
[SET COMMENTS]
Dustox has decent Special Defense and can make a decent Toxic Staller. Roost helps it recover health. Light Screen means that Dustox can take a hit. Sludge Bomb is your main attack.
[Additional Comments]
Hidden Power Fire is good for Steel Types whilst Bug Buzz gives you a secondary STAB.
[Team Options]
Dustox appreciates Rapid Spin to prevent Stealth Rock. Magneton can take out Steel Types who are immune to Poison. Any Physical attackers can take out Special Walls.
[Optional Changes]
Whirlwind can be used to Phaze out Stat uppers and U turn can be used to scout.
[Counters]
Steel types are good counters as they are immune to Poison. Anything with good Special Defense can take a hit and retaliate killing Dustox.