FINALLY began an experiment I thought up two months ago...drew the 55 gallon rain barrel in the south bed down maybe 15 gallons, then jammed it nearly full with branches of an opuntia cactus that years ago proved to HAVE glochids (they went right through heavy leather gloves today, ouch!). To keep them submerged I set atop them a 5 gallon bucket with a heavy brick inside. My hope is that they will decay/ferment into a liquid fertilizer. IF it works it will be a great way to eliminate two BIG plants of it plus greatly reduce the size of the truly glochid-free one close to the house.