Treating soil after removing scale infested plants

Hi everyone

I moved into a new home and in the front garden bed there are two plants and a lot of red mulch nothing else.

The two plants are absolutely riddled with scale like there is not a surface that doesnt have scale.

I don’t like these plants anyway so I am slowly chopping it down and removing it.

Once I get the plants and stumps out should I treat the soil before planting in the early spring? I can’t seem to find a concrete answer online. Plan to leave it empty for a couple of months through late autumn and winter

Thanks