I've so far seen this on both Fluffborough and Spiffinmoore where, regardless of having more than enough trained security janitors, I'm sometimes not able to completely remove all of the invaders because the invaders in question stay in areas that are not technically on my plots. They just move around in the areas outside it (or in the case of the sports campus, often on the road/path in the middle that separates plots), so I can't even force my janitors to engage them by picking them up and dropping them on the invaders. It's quite irritating having pumped so much time and money into upping the janitorial staff only to lose out on the rewards I should be easily attaining for removing them.
It seems like either the pathing for the invaders needs some work, or my janitors should be able to engage them outside the boundaries of my plots (within reason).

Hello sinomatic!

I'm sorry you're experiencing this issue with the janitors and invaders. I've alerted the devs to the issue, Could you please confirm which platform you are on?

Thank you for your patience!
Jax