Pasture maintenance: Herbicide

We'd all really just like to ride our horses all the time and make cool videos. However there's a ton of work that goes on to keeping them on your own property. Things like fencing, mowing and good inedible plant maintenance go into that.
I found that inedible plants were taking over my pastures. Not only were there big patches the horses couldn't eat it also mixes into the grasses but also the horses eat around it leaving a lot of edible grass they won't touch.
I also should have mentioned in the video that this is a broad leaf herbicide and won't hurt the pasture grass.
What I used in the video
https://www.tractorsupply.com/tsc/product/gordons-pasture-pro-herbicide-1-gal?cm_vc=-10005