Bikini Bottom has some serious bacteria spills going on, but SpongeBob can help clean it up. Help him by clicking on bacteria spill to drop a sponge and let it soak the bacteria. SpongeBob can only drop 4 sponges at a time. Let the sponges soak up the bacteria spills and then click on the sponges to recollect.
Once he is green, go to the wringer to clean him out. Repeat the steps to gather filtered water to pass the level. Sometimes Patrick is nearby and running into him will slow you down. You can click on the mirror to distract him. If you haven't cleaned enough bacteria spills when time is up, the game ends.