Jennifer Lopez's son poo in her pool

Jennifer Lopez has had to shell out $6,000 to clean her swimming pool after her son did a poo in it.

The On The Floor hitmaker who has three-year-old twins Max and Emme with husband Marc Anthony had to pay to have her pool professionally cleaned after Max had an accident while potty training at the couple’s California home.

“He had an accident in the pool and it got into the filter system and they charged us to clean it,” Marc said. “That was expensive. He took a $6,000 dump in the pool.”

The Grammy Award-winning singer who recently celebrated his sixth wedding anniversary with Jennifer revealed while potty training is in “full force”, the twins have worked out ways to trick their parents into giving them treats in return for correct toilet use.

“Potty training is in full force, but they figure out things. I don’t know how they do it,” she said.

“Every time they use their potty we give them a lollipop. Then a few days passed and we ran out of lollipops. I’m like ‘You should probably get them checked out if they’re using the potty that much.’ ”