One vial of weapon poison can poison up to 5 arrows(5 projectiles per one vial).
Equip arrows and then use poison.
poison+weapon poison is snake+weapon(or tools) weapon is tools and human
weapon+poison
Poison + weapon = poisoned weapon
Brutal arrows can only be fired from composite ogre bows which are only available to players who have gone far enough into the Zogre Flesh Eaters quest. Grish will show you how to make a composite ogre bow from an Achey log and wolf bones.
poison+weapon poison is snake+weapon(or tools) weapon is tools and human
weapon+poison
weapon+poison
Mix snake and weapons.
Poison Dart Frogs do not shoot their poison. They are named Dart Frogs because natives in South America used to use them to make the tips of their arrows poisonous.
Mix weapon with poison to get poisonweapon then mix poisonweapon with human to get assassin
If you have the right herblore level you can make the potion, otherwise you will have to buy Weapon Poison in the Grand Exchange, then use the potion on your dagger to poison it.A guide to getting the best weapon poison:Weapon Poison = Cheapest and weakest of the three.Weapon Poison P+ = Moderately Priced, Better than Original Weapon Poison damage wise.Weapon Poison P++ = Costs slightly more than P+, better that Weapon Poison P+ damage wise.If you want the best value for your money, get P++ its the best of the 3 and should cost somewhere under 10k.