Advice please re wasps in my beekeeping equipment

[Cat grr]

Wasps have found their way into my bee keeping shed and are eating the wax from my spare brood and super frames from last year. Any advice on how to deal with them? I've tried blocking the cracks I've seen them hovering at and there isn't an obvious nest inside.
it's raining here, is that a good time to try and remove my kit?