Originally posted by avatar.zero:

Spawn suppression inside a base is less useful against raids than regular random spawns, since the raid critters spawn from the outer reaches of the raid zone.

Generally agree, but not fully. The spawn radius for a raid is 96m from center (red circle on map only shows 64m radius). If you pepper the area enough with base structures (or build on an island), spawning can be made completely impossible for raids.