Thorough Search Feat 3GeneralSource Advanced Player's Guide pg. 209Prerequisites expert in Perception
You take your time searching to ensure you find everything. When
Searching, you can take twice as long to search. Normally this means you Search at up to one quarter of your Speed, to a maximum of 150 feet per minute to check everything, or 75 feet per minute to check everything before you walk into it. If you do, you gain a +2 circumstance bonus to your Perception checks to
Seek.