I have a pest control company who wants to remove 6-8 cinder blocks from my foundation from the inside of my crawlspace to treat for termites. This is necessary to directly treat the areas which are inaccessable from the outside because of my front porch and two back poured concrete patios. These would be permanant removals and allow future access termite inspection points for these areas. Is this acceptable? He would not be removing adjacent blocks. Since the blocks are offset and not stacked, removing 6-8 on a foundation that is about 60 feet by 25 feet would not compromise structure right? He says this is old school but really correct to treat areas not directly accessable from outside and better than drilling through concrete front porch and back patios. Opinions from masons, foundation guys, cement guys etc please!