Bees Knees

Bees Knees is the ninth level in Popping Fields.

Solution
Pop the Bee Bloon and guide the bees inside the metal box. Don't let the bees touch the edges.

Trivia

 * It is the first level to have a Bee Bloon in it, hence the name.
 * As shown to the right, the previous and next level's names rhyme with each other.