I live in Ohio in a relatively new home. The soil is typical builder-grade (a.k.a. no frills - probably scooped all the topsoil away and left the clay). My back yard is a pretty big slope and we've been trying for several years to get grass to grow well enough so it's not a mudpit.
The builder regraded twice to reduce the slope and reseeded and put down hay, a mat, etc. It still looks awful.
Lately I've seen culverts that were redug by the highway crew that had what appeared to be a mat of smallish (3" x 3"?) concrete blocks placed in the culvert. Grass is growing up through whatever material this is and the ground isn't being eroded away.
I've searched and can't find anything like this. It isn't a straw or mesh mat that the big stores sell...
If you know what I'm talking about, or have any other ideas, I'd love to hear them. Thanks!