Here's a list of Fox News Sponsors to boycott until support for dishonest "news" (propaganda disguised as news) is no more. Write/email letters to these and local sponsors letting them know of your disinclination to buy from them while the shows they sponsor continue dishonest practices.
As a possible example, you could copy and paste the following into the email message after clicking on the particular sponsor link below:
This message is to let you know that until Fox News discontinues unfair practices of blurring partisan political opinion with news and calling it "Fair And Balanced", I will avoid buying products from sponsors of its shows. I have noticed your products advertised on this network. Please let me know if your company plans to continue this controversial support of this unethical practice through advertisements on this network or if I could consider to purchase your products again.
Leading advertisers as of July 26, 2019: Allstate GM Procter & Gamble Bayer Trivago.com (Expedia) Progressive Ancestry.com Roman Pharmacy IHOP Bowflex Proactiv Subaru Sheex Sandals Hotel/Resort Safelite Auto Glass Co Nutrisystem USAA MyPillowUSA LifeLock StarKist Booking.com WeatherTech Fiat Chrysler HomeToGo ClearChoice Dental WellsFargo JennyCraig Tecovas AstraZeneca Prevagen CarFax Elite Singles Dating Service GlaxoSmithKline SoClean Mint Mobile Eli Lilly Norwegian Cruise Line Novo Nordisk Voya ADT Nestle Liberty Mutual Angie's List Home Advisor Our Time Dating Match.com TripAdvisor Ford PODS Hulu Esurance Indeed AC Hotels by Marriott Carvana Geico Toyota Sleep Number Acura Volvo