My life is slop unlucky. I have missed 14 times with toxic in 19 uses. I want a move that can poison for sure.
Poison Fang: 100 Acc, chance to poison.
Cross Poison: 100 Acc, chance to poison.
Poison Gas: 85 Acc, poisons.
Poison Sting and Poison Jab: 100 Acc, chance to poison.
Poison Tail: 100 Acc, chance to poison.
Poisonpowder: 75 Acc, chance to poison.
Sludge: 100 Acc, chance to poison.
There are more, just look here: http://pokemondb.net/move/all#poison
Besides Toxic Spikes, Toxic is your best bet for poisoning enemies with it's 90 base accuracy.
Al lthe moves that can poison are:
Fling (poison barb)
The moves with a 100% chance are:
The moves with 100% chance and accuracy are: