Strange things are found in the City Sewers. The City of Marada health authorities has made it illegal for pets to ride down the Sewer Pipes and swim in the sewage. They believe its unhealthy, dangerous and sometimes deadly. However, if you complete the Sewer Pipes Treasure Map you can find a secret way into the Sewer Pipes, where one of your pets can ride through the pipes once every 6 hours, earning either Gym Stats, Elite Gym Stats or MP. You'll need to collect all 16 pieces of the Sewer Pipes Treasure Map to complete it before your pet will change.
Buy a Sewer Pipes Giftbox from the Account Upgrades and you can use Sewer Pipes twice as often for life!