Something else you can do.
You can add a model onto a build-plate solely to use it to take the waste material.
The idea is, to choose a complicated print with many colour changes and then add one or more other models you could use that you do not care about how they look. You can make some great-looking models through unplanned colour mixing.
You right-click the models you wish to use as sacrificial lambs select the “Flush Options” and specifically choose “Flush into this object.”
Ideally, but, not required, try to find models with similar heights to those you are primarily printing. The sacrificial models will take the otherwise ejected (pooped) filament.