Just got a call today to go and give an estimate tomorrow for (what she said) was a small tropical like garden behind her house. she wanted it cleaned out and add new mulch. I have never done any garden work like this but figured if Im going to be in the biz, I need to start somewhere.... Anyways, What all do you need to do? Should I take out the old mulch or just lay it down on top? if its just dirt, should I prep the dirt somehow or just lay the mulch down? Also, how do you usually charge for jobs like this?