When to move boys out of cage?

Sometimes, the boys might mature earlier at around 3 weeks, same goes for sow from what I have read and heard. So, as precaution, you should just monitor if the boys started to get frisky (they be doing the funky dance and try to erm... do the hump) then its adios mama

They MUST be out by day 21 I understand because you may not see the behavior before the act happens.

No later than 21 days

October 10th. Baby boars must be removed from their mother at 21 days of age.

Three weeks of age, so the 10th would be the deadline.

Just to be on the safer side of things....

TYVM! don't want another pregnancy!