The purveyors of Strawberry Milk, Peach Madness and Froopy (tastes like Froot Loops) e-cigarette pods are having a very good year.

After Juul Labs, under pressure from the Food and Drug Administration, stopped selling most of its hugely popular flavored nicotine pods in stores last fall, upstart competitors swooped in to grab the shelf space. Trumpeting their own fruity and candy-flavored pods as compatible with Juul devices, they have seen their sales soar.

The proliferation of “Juul-alikes” is not only complicating Juul’s efforts to clean up its tarnished image, but also shows just how entrenched the youth vaping problem has become and that voluntary measures are unlikely to solve it.

When Juul agreed to discontinue store sales of its fruit and dessert flavors, it said it would continue selling them online and strengthen the age verification process on its website.