Climbing on tables

So I’m at a ratio of 1:6 with my tots being 12m-24m. Most are in the 18-20m range and have gotten really into testing limits (totally fine as it fits their development level!) but lately they have been climbing more on the tables and shelves and standing on chairs. We have a soft climber that used to work to redirect their climbing urge but no longer does the trick, I have no issue redirecting and explaining it’s not safe but lately they have waited till I’m changing diapers and they know my hands are busy and I can’t walk away (maybe a coincidence but it doesn’t feel like it lol).

What are some tips and tricks you use to aid against the behavior?

We talk about feet on the floor, safe and unsafe playing, climbing on the climber instead but it hasn’t been effective lately. Other side note is the other tot room lets their kids climb on anything- which may be ok for those teachers because there’s two in the room and I’m always the only teacher in my room. I also work a 4-10 schedule so I think the teacher in my room on the days I’m off work allows them to even when I say it’s against the rules for the class.