1. A method comprising: selecting, by at least one computing device, an electronic catalog entry from an electronic catalog; selecting, by the at least one computing device, a plurality of suppression rules based at least in part on a product category associated with the electronic catalog entry or a merchant associated with the electronic catalog entry; applying, by the at least one computing device, the plurality of suppression rules to the electronic catalog entry; determining, by the at least one computing device, that the electronic catalog entry is a suppressed entry by applying the plurality of suppression rules to the electronic catalog entry; setting, by the at least one computing device, a flag of a database entry corresponding to the electronic catalog entry to indicate that the electronic catalog entry is a suppressed entry and is not eligible to be listed in a search index for a search engine; in response to the electronic catalog entry being a suppressed entry, excluding, by the at least one computing device, the electronic catalog entry from the search index for the search engine; wherein the plurality of suppression rules comprise at least one of: a number of product returns corresponding to the electronic catalog entry meeting a predefined threshold, a number of customer complaints corresponding to the electronic catalog entry meeting a predefined threshold, the electronic catalog entry lacking disclosure of a required product information, or the electronic catalog entry lacking a corresponding image, wherein different suppression rules specify different requirements for electronic catalog entries based on the product category associated with a respective electronic catalog entry or the merchant associated with the respective electronic catalog entry; storing the search index as a data structure in a data store; and generating, by the search engine accessing the search index, a list of search results, wherein the list of search results does not include at least the suppressed entry irrespective of a search query that initiated the search by the search engine.