You create a Poison Bomb item by redeeming Poison Bomb shards or by purchasing a Poison Bomb item from the in-game marketplace (Coming Soon).

There are five different rarities of Poison Bomb.

The rarer the Poison Bomb, the greater the decrease in the Agility stat and the longer it will last.

Once you have a Poison Bomb item:

Visit the Land you want to poison.

Click on the  "Use Item" icon on the right side of your screen. This will bring up your inventory.

Click on the Poison Bomb icon to activate it.

IMPORTANT - Rarer bombs cancel out less rare bombs

Let's look at an example.

Player A uses a Common Poison Bomb on a Land. The Bomb decreases the Agility of other player's Bees by 10% for 6 hours (see chart below). 

If player B then uses a Rare (or higher) Bomb, it will cancel the Bomb of player A and player B will have the advantage. 

See Poison Bomb for additional details on the effects of Poison Bomb.