Selectively Blocking WebSearch ads

Can you selectively block advertisers using the Google wensearch

[btas2]

I know you can block certain URLs in the AdSense program. That's easy.

My question is whether you can do the same when using the AdSense search program. It presents a block of ads, then the search results, then a block of ads.

Can you control what appears in the ads?

My particular concern are a series of "aff" (affiliate) ads that I'm seeing on popular search terms. The adds have the URL "www.a-well-known-company.com". I have "www.a-well-known-company.com" blocked on my webpages, but I'm not sure if that block is supposed to apply on the search pages or whether it's effective (anywhere) on "aff" ads.

[btas2]

OK, I'm dumb.

Just found the URL filter for search. It's seperate from the AsSense URL filter.