I'm going to aerate a lawn that is full of weeds most of them are dandelions I will put some fertilizer too .My question is??? the guy already put some weed and feed last week but the weed still there the grass does look good other than some bare spots but so do the weeds so if I do the aeration and put some fertilizer will that take care of the problem or should I just do the aeration??? will like to hear some comments !!!!!