In my current setup with default spawn rates, cities are almost impenetrable without a lot of care and work… this is probably a mix of using wander spawns and PK’s Rebalance which I believe increases spawn rates overall. The best way I’ve found to clear them out is to just sneak up to a useless building in the middle of the night and light it on fire, then watch them sizzle…
Am I correct that the new implementation of wander spawns, at least as far as cities are concerned, the hordes do draw from an invisible “pool” of zombies so it’s actually possible to somewhat clear a town? I vaguely remember reading something to that effect (somewhere). If so, that seems to be some consolation. The way I recall wander/dynamic spawning working previously was that it would just create a bunch of zombies out of thin air whenever you made a noise.