Find a tool you can use comfortably
Traditional floss works for many tight contacts. Other spaces may be better suited to an interdental brush or another cleaner recommended by the dental team. Braces, bridges and implants can require a different approach.
Ask the team to demonstrate the method in your own mouth and let you practice. The most useful tool is one that fits appropriately and that you can use consistently without injuring the gum.
Be gentle and thorough
Guide floss carefully between teeth rather than snapping it down onto the gums. Clean along each adjacent tooth surface as shown by your dentist or hygienist. Follow the instructions for other devices.
If floss repeatedly catches or shreds in one place, mention it at your visit. A tight contact, rough restoration or other issue may need attention. Do not force a large brush into a space where it does not fit.
Do not ignore persistent bleeding
Bleeding can be a sign of gum inflammation, but an examination is needed to understand the cause. Keep up gentle cleaning and arrange an assessment if bleeding persists, worsens or is accompanied by swelling or discomfort.
Mouthwash can have a role in some care plans, but it does not remove the need to brush and clean between teeth. Ask whether your routine is reaching the right areas and whether professional gum treatment is needed.
Further reading
American Dental Association: Flossing ↗
General education, not a diagnosis or an individual treatment recommendation. Ask your dental professional about your own care.