Opinions on MiracleGrow housplant food?

Does anyone have any opinions or advice on the use of miracle grow houseplant solution. If it's worth doing in the first place then is it better to dilute the solution in the water or just apply it to the dirt under the leaves? and can i use it for almost the entire growth of the pant?

i use m g & found it to work great if u use it right. i u use mg triple 20 water sol. use 1/2 rec. deric. & grad. incress. hope this helps.