(Bloomberg) -- Taco Bell is working its way through the coronavirus crisis, with more than 95% of its roughly 6,800 U.S. restaurants open for drive-thru, pick-up and delivery. But the leader of the Yum! Brands Inc.-owned chain isn’t sure what will happen when the worst is past.

“When you work through the crisis, learn and do the consumer research, it’s hard to know when the new normal will come,” Taco Bell President and Chief Operating Officer Mike Grams said in an interview.

Taco Bell has been able to lean on its drive-thru service, which accounted for more than 70% of the company’s $11 billion in sales in 2019 and now represents even more, Grams said. He did not give any guidance on current overall sales.

“If you’re a consumer, where do you feel safer? In your own car? Or sitting down at a restaurant table?” Grams said. “It’s drive thru.”

To protect its 200,000 restaurant workers -- and to reassure consumers -- Taco Bell is implementing new hygiene and sanitation practices. Starting Thursday, Taco Bell will offer contactless payment methods, as well as requiring all employees to wear gloves. Workers will have their temperatures checked at the beginning of each shift and before they interact with food or equipment.

The company is also buying masks and will provide training for new cleaning standards. These costs will be split between the company and franchisees. Some of these practices were inspired by the experience of other Yum Brands, like KFC, in China.

Taco Bell has not experienced any supply chain disruptions for food or packaging, Grams said.

The industry has been deeply disrupted by the virus. On Wednesday, Starbucks Corp. withdrew its fiscal 2020 guidance and said it expects to see lower sales through September. McDonald’s Corp. also withdrew its guidance, pointing to ongoing uncertainty from the outbreak.

©2020 Bloomberg L.P.