Amazon announced Tuesday that it has added 50 new brands to its Dash button order program, including Campbell’s Soup, Clif Bar, Puff, and Quilted Northern. Amazon Dash now offers over 150 brands for thousands of products.Amazon introduced the Dash platform last March: The Wi-Fi-enabled devices allow customers to replenish goods with a simple button push. But the Dash initiative appears to have limited staying power with consumers, with fewer than half who bought a Dash button since March 2015 still using it to order something; of those that do use it, they push it once every couple of months or so for items like laundry detergent that are regularly used but too unpredictable for subscription orders, based on Slice Intelligence data cited by the Wall Street Journal.