Like, it literally isn't hard to keep Kiro from escaping. Just have someone stationed to watch him in rotations, or have Kakashi's ninja dogs on standby.
What you need to do is create an above-board plan of action right in front of Kiro, and then have your real plan of action be something else entirely so as he tries to evade the first plan he walks right into the second.
On the surface, say they're in rotations to watch him. Then have the ninja dogs summoned and watching him without his knowledge. While he's trying to evade whoever's watching him, he'll alert the ninja dogs who will bark, thus alerting everyone else, and from there Kiro's hopes of escape are dashed.
Alternatively, Kakashi knows Sealing jutsu.
Alternatively, do what Kiba does and have your dog take a wazz all over Kiro, that way he won't be able to escape without the dogs smelling him.
Alternatively, have Furījia cripple his chakra points each and every night, might as well dislocate all his joints too, she'll be able to put them back later of course.
Alternatively, create a natural motion sensor. A natural motion sensor is basically putting something in the way, like a pile of stones or arranging the dirt in a certain pattern, so that when someone moves by and disturbs the system the person who set it up would notice the disturbance in the system. Ah, it's a trap both ways though, because even if the person thinks to rearrange the system back to its original state, that in and of itself means that they would've passed through since it's nigh-impossible for the system to have remained in its original state considering external factors like, wind, animal life, etc.
Still want more methods?