Quicksand inflicts 1/8 of the target's maximum HP as damage per turn for four to five turns upon use, in addition to the damage dealt when it is used. It also traps the target, preventing switching and escape. If a trapped Pokémon uses Rapid Spin, it will be freed.
If a wild Pokémon uses Quicksand on the player's Pokémon, the player may escape if the affected Pokémon has Run Away or is holding a Smoke Ball. However, these do not allow the player to switch the Pokémon out. If an affected Pokémon is holding a Shed Shell, it can switch out.
If the user of Quicksand is holding a Grip Claw, the duration will always be 5 turns. If a Binding Band is held by the user, the damage done at the end of each turn will increase from 1/8 of the target's maximum HP to 1/6.
The user traps the target inside Quicksand for four to five turns. The target can't flee during this time.