I did this last year. Rake out the dead grass and loosen the soil. Add extra soil if needed. Then overseed the spot. Cover the seed with a little soil. Rake it in a little. Water every other day if no scheduled rain.
Yes, rinse, rinse, rinse. I’m told that female dogs do this not males.
Hi Mary: William said exactly what I was going to say. Can't add a thing:) Good luck