Bay Area sanitation workers this week joined what a union leader called a nationwide garbage “war” between the Teamsters and Republic Services — which provides trash and recycling pickups for hundreds of thousands of residents around the U.S — over wages and working conditions.

Thousands of Bay Area residents whose trash is picked up by Republic Services are experiencing service interruptions due to a nationwide strike by the Teamsters union against the garbage giant.

Some Bay Area cities expect trash collection to resume this weekend amid a sanitation workers strike that has sparked delays in service and garbage piling up in neighborhoods. Republic Services on Friday said customers can expect texts,