Amazon Expands Buttons for Reordering Essentials -- Like Doritos Inc. is expanding the number of products available for instant re-ordering through its wireless Dash Buttons, citing high customer demand.

After last year rolling out the WiFi-connected plastic tabs that can be mounted to the fridge, washing machine or kitchen cupboard, the online retailing giant is increasing the number of brands that can be re-ordered by pushing a button to more than 100, Amazon said in a statement Thursday.

Now Amazon Prime customers who suddenly find themselves low on supplies -- from Trojan condoms to Doritos chips, Energizer batteries, Purina dog food and more -- can hit the button to reorder the product and get it delivered for free. The buttons cost $4.99 each, with the cost reimbursed after the first order through Dash.

When the buttons were first introduced in March 2015 they were met with some skepticism as to whether people would want or use them. But Amazon said orders placed through Dash have grown by more than 75 percent in the last three months alone and now take place more than once a minute.

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