For many direct-to-consumer companies trying to diversify their marketing away from Facebook and into traditional media, TV stands as a new opportunity. Some DTC companies that have been experimenting with TV for a few years say it’s paying off in web traffic and sales.

HelloFresh, the 7-year-old food delivery service, has bought national TV spots since 2015 and continues to see its TV ads pay off, according to David Webb, director of growth and analytics for media strategy at HelloFresh U.S. Webb said HelloFresh attributes its TV ads to an 88 percent year-over-year increase in site and app visits.

Webb wouldn’t share any other numbers, but a May 23 study by the Video Advertising Bureau of 50 DTC companies found a correlation between HelloFresh’s TV advertising and its revenue. In 2016, HelloFresh spent around $26 million on TV ads and brought in a little more than $663 million in revenue, the study found. In 2017, HelloFresh increased its TV ad spend to nearly $36 million and revenue increased by 52 percent to over $1 billion, according to the study.

HelloFresh is just one example. The study said DTC companies like Peloton, Chewy, Carvana, Ancestry, Poshmark and Stitch Fix also saw their revenues jump after they increased their TV spend. The companies seem to think TV is working because they’re spending more there. According to the report, DTC companies spent $1.3 billion on TV ads in 2017, $650 million more than they did in 2016, a 98 percent year-over-year increase.