If you can figure out a way to keep the creepy crawlies out of the garden while letting all the good insects and other good garden residents thrive be sure to let the rest of us know. We can make a mint!
Meanwhile we just have to keep on truckin' and get our satisfaction out of stabbing them with pins and hitting them with hammers.
This latest pic of yours - take a big pin and stab that stem in 8 or 10 places about 3/4 inch apart on both sides of the frass pile them bury the stem under dirt and cross your fingers. Good luck!
Dave