High quality plastic picks have one end with a sharp wedge and grooves and the other end a thin brush that can penetrate very narrow gaps between teeth along the gum line. I've found these picks to be a good, inexpensive replacement for stiff strings.
π TheraBreath Fresh Breath Chewing Gum: ZINC with Citrus Mint Flavor - Pack of 6 (10 Count)
11 Review
π± Organic Peppermint and Parsley Oil Gel Capsules for Fresh Breath - Keto Friendly Stomach Mints with 3+ Hour Freshness - XL Size - Freshies
12 Review
Breath Me TM 50pcs Black Fiber Reed Diffuser Refill Sticks 12 inch - Elegant Home Fragrance Replacement
11 Review
BLIS Fresh Breath Kit: Potent BLIS K12 Oral Probiotic for Bad Breath & Halitosis Treatment - Clinically Proven Mouthwash, Tongue Scraper, Lozenges - 4 Week Supply
11 Review