That's not just one spammer, its several< NyanCat >
And I've no idea what you're looking for with that search.
If you use more specific search terms that describe what you're looking for, and choose the specific category where such things would be found, you can in fact "block" most undesired.
Note that searching for
dual action
finds any ads that have both of those words, even in separate places. If you want to find only ads that have that exact phrase in them, search for:
That only finds TWO matching ads on the SLO site, one for a guitar, and one for some sort of household cleaner.
Oct 2 Only used once Bissell Crosswave all-in-one multi surface cleaner $200 (Atascadero ) pic
Sep 28 39 Inch Spruce Full Size Classical Acoustic Guitar with Bag $100 (Arroyo Grande ) pic