Hi Patrick and Ashot, we have the same problem and are constantly replanting!! A few years ago, in the middle of a more severe drought, we exchanged our lawn for artificial turf!!
My garden has been decimated by gophers and moles because of the drought in Northern California. The lawn is just destroyed. My neighbors are probably annoyed. It might just be easier to just re landscape the whole thing!
And I saw on the news that a homeowner in a nice neighborhood in Walnut Creek, California did the artificial turf and it was stolen in the middle of the night!