Making jobsite blocks stop being jobsite blocks

You should have ability to block villagers from using jobsite block, for example: using ink sac on barrel or lectern should stop villagers from seeing it as jobsite block (ink sac because imagine its dirty) it would work exactly like wax on copper, to unblock jobsite block you would use water bottle or wet sponge to "clean" it, this new feature would help prevent situations in which your storage facility gets swarmed by fishermen or your build using jobsite blocks becomes rush hour meeting place for employed villagers, i reckon this feature would be greatly appreciated by building community