Punishments for couple slave

[master.x]

I'm fairly new here but have been visiting the forums for some time now. This is also my first thread and I'm looking for some creative ideas from the people here.

There's a slave couple that serves me a few times a month. We don't get a lot of time since all 3 of us are working and pretty busy in the outside world but I have set some rules and one of the rules is that they're not supposed to get involved in any kind of sexual activities in my absence. Two days ago, they messaged me and told me they ended up having sex last night. They would generally not do anything against what I say but they got tipsy on a weekend outing. As a punishment, they will be sleeping in different rooms for the next 2 weeks.

Looking for creative ideas and lifestyle changes rather than a one-time task as a punishment. Your suggestions will be implemented after my approval and they shouldn't last more than a month.

LIMITS: Scat, Blood, Public, permanent damage