Yeah that looks like some of that EZseed stuff they overcharge for 80% mulch product and 20% seed .If there is any consolation looking at how he put it down it probably wont germinate looks like its mainly sitting on top of stressed out canopy. If the two of you have a good relationship the Bible might be a good idea, I mean he cared at least enough to try and fix the mess so if you point him in the right direction maybe there's a fanatic lurking .