McDonald's Corp. and Burger King Holdings Inc. are testing the packets but declined to comment on the results.
As the name promises, "Dip and Squeeze" ketchup can be squeezed out through one end or the lid can be peeled back for dipping. The red, bottle-shaped packets hold three times the ketchup as traditional packets. The new containers are more expensive than the old sleeves, but Heinz hopes customers learn not to grab more than one or two.