i saw no signs, but i wasnt too sure where to look for them. i saw a lot of small 1-2mm black things that were almost all just morsels of dirt from being tossed around the ground. i checked the cracks of the clothing and couldnt really see much. i didnt see any blood spots or anything but i dont know how big/small those are and dont know how well they would blend into the color of this couch. any sure places to check that the bedbugs would def be hiding in? the couch is sitting in the lot next door right now.

TLDR
how should i properly inspect this for bedbugs?