This stuff is even worse! Luckily it is more rare in the yard. I drop everything to get this out of the yard when I find it. 

 After spending 10+ hours just pulling this stuff over the course of a few weeks (without making a dent). I read about using a broadleaf herbicide. I really have been trying not to use chemicals, but I can't seem to get ahead of the stuff. I ordered the product on Amazon and received it on June 7th. It is VERY concentrated, and one bottle makes ~ 8 gallons. I use this mindfully, and I am targeted with this product and only spray it directly on the Canada Thistle. It has made a HUGE difference! I have barely gone through the 1st mixture that I made, and they are almost gone!  I imagine that this one bottle is going to last me years and will result in fewer chemicals being sprayed by being vigilant and selective with spraying the thistle.