A router table will make the process easier to control. Setup and bit selection are key. Also direction of feed matters, and there are other tricks. You can build a simple table, pair it with an inexpensive router (for a very light cut), and leave it set up for the one task. Router dust is fine, and can hang in the air for a long time, so hooking it up to a vacuum, can be a good idea, as well as a paper mask. Generally, when working in an enclosed space, once I start to cut, the mask goes on until I leave the space for the day. Assume that the dust will end up on everything when considering where to do your work.