see pics. nice 6' tall plant. recently repotted. didn't notice the white stuff until after repotting. used big box store potting soil and maybe I got a bonus parasite with the soil?

You can wash them off of the leaves with luke warm water and a light dish soap ( no bleach or anti bacterial) type. Then spray the soil, that is where they live. Ugly things. Mrs. G

An easy treatment, and one of the best for this is Bonide Products 951 Houseplant Systemic Insect Control Granules.
It doesn't smell. You can keep the dirt, and it lasts for 8 weeks. So just one treatment to all of your plants that are non-edible will work! No worries about the waxy skin or wooly hair repelling anything. It's a systemic, as they feed, they take up the poison.

I myself would wash as many as I can off, give the granules, hit them with horticultural (Insecticidal) soap (plants and soil). The granules take time to work, so the other treatments will set them back and give time for the granules to be absorbed by the plant. It looks like you have a bad infection, so best to hit them hard. Your other plants if they look OK, you can probably just give them the granules. If you do this, you will get rid of them.

Having the soap will come in handy. if you have plants outside for the summer, it's a good treatment to use before you bring them in. So you don't bring any bugs in the house. It also works well on other insects, you can use it up pretty easily.

As you can tell their are lot's of treatments you can use. Up to you on how you proceed. Good luck!
You can get all these products at a good garden center (not at big box stores, a small private garden center), or even off Amazon.
You can also make your own soap, but risk damaging the plant by using the wrong type of soap, or the wrong dosage. too high will damage the plant, too low will be ineffective. So best to buy the product IMHO.