Jennifer, thanks!
I can't imagine anyone planting this particular mint around a pool, it grows so tall you almost can't see over it, but I can understand that most any kind of mint would help with the mosquito population. There are just so many varieties of mint, it's hard to tell the difference. I'll bet that pool area made a beautiful flower bed. Great idea you had.
I agree about lily of the valley and my other two mistakes are bishops weed and variegated vinca vine. I wanted a 'white' border on one end of my house to blend into a white/pale bed at the corner. I ended up with a sea of white. Now both are mostly contained and act as accents. I just have to keep the vinca trimmed and thinned.
All of them, pretty but invasive in some areas.
Thanks again!