Is there something that kills grass but not shrubs/plants?

I have tons of flower beds and landscaping borders and my grass won't stop invading every year.

I have edged religiously, pulled out of the ground when possible, etc. shite just comes right back.

I wish there was some spray like a roundup that would be longer lasting killer, be easier than manual labor to remove, but not harm the flowers, shrubs, and bushes.

Does that exist?