We used to have a few nice spiders around the house, but both of our cats
have a taste for them, or anything else that moves. Speedy Pretzel has even
managed to clear up the remaining spiders near curtain rods etc. (The 5
foot leap she makes from the headboard of our bed to the curtain rods is
something to see).
Mice and rats I find a LOT more offensive (cats don't get to go in the
garage). Nothing like a rats nest to stink up a place, except for a rats
nest with a dead rat in it.