I have a small area in my yard that has a fairly steep slope that I would like to plant some grass seed. In the past whenever it rains or when I water, almost all the seed washes away before it sprouts. Does anyone have any homemade seed binder recipes or other suggestions? I know sod is an option..but I would rather not spend the money on sod when I already have plenty of grass seed mixture that is of the same variety as the rest of my lawn. I went to both home depot and lowes (in my area) and neither store sold any binder/soil tackifier.