If you own Palico Paintballs (Blue Paintballs), then fulfilling the following conditions will let your Palico automatically use Palico Paintballs to mark monsters:

• "Adventure Sync" is enabled.

• Walk a certain distance.

Please see details of Adventure Sync settings in this article.

Notes:

• The ★(star) of the monster that gets marked is randomly determined from the star levels you currently have unlocked.

• Any unused Palico Paintballs will not carry over to the following day.

• If GPS usage is restricted on your device or communication line, such as power-saving mode or bandwidth limitation, your Palico may not be able to mark even if "Adventure sync" is turned on.

• (Updated on September 24, 2024) Even when Adventure Sync is disabled, your Palico may automatically mark monsters while the app is displayed on the screen.

• If a monster is marked in a given area, it may become harder to mark monsters with Palico Paintballs in the proximity of the area, unless the monster is successfully hunted or unmarked. 

• The Palico marking limit is not affected by monsters marked with regular Paintballs.
  

• This limit does not apply when using regular Paintballs.