The easier way to do this is just use olive oil to clean your glass. I throw my shit in the oven to heat up to 250 degrees (anything above 300 will destroy THC), pour coconut or olive oil depending on what I have, and just shake that bitch. Gets everything off, puts all the THC into the oil for later use. I recommend using coconut oil and making capsules out of it if you're cleaning glass used for flower because the flavor is ass, but if it's a dab rig then it's perfectly fine to put into edibles and will taste like normal weed oil