Taking birds out

Hi all, sorry this is just a beginner's question.. when you guys take your birds out for play sessions outside the cage, how do you prevent them from pooping everywhere?

Normally birds dont get toilet trained but there are some exceptions. 1 thing is that older birds usually dont poop so much so they can usually finish their flying session without pooing on the floor.

Hi all they actually have such thing called the bird diaper in the states but I wonder if they carry it locally!It actually helps alot when u bring your parrot out especially within the home so its not so messy.