Basically agree with above. The reason why people caution against mint is given decent conditions it can be so aggressive/ invasive, take over your yard. I have some planted in the ground in dry shade, poor clay/rock soi. Given that, it still spreads, but not as rampantly and I can keep up by pulling it.
If yours is in better conditions than mine and if you don't want a yard full of mint, then gixx is right, better to dig it out and put in containers.