[sonick]

I used beneficial nematodes last summer for grub prevention to avoid my lawn getting dug up by crows and racoons and it worked wonderfully.

I didn't treat my front lawn and it got torn up but my backyard was untouched.

I suggest getting bulk yards of good quality top soil from landscaping centres you will probably need to level it out. Get a sand mix for additional drainage.

Get good quality seed, starter fert which is higher in phosphorous.

Also suggest getting a mail-in soil test analysis so you know for sure what levels of fertilizer you need.