Menstrual pads do not directly cause Urinary Tract Infections (UTIs), but improper pad habits can create an environment that facilitates bacterial growth and increases your risk. UTIs occur when bacteria (typically E. coli from the bowel) enter the urethra and travel to the bladder. How do you know tampons are accessible in Myanmar??? Menstrual sponges are reusable. I think you could probably make your own from natural sponge. Yes, reusable menstrual sponges need to be cleaned and sanitized before first use and between cycles, though true medical sterilization is difficult to achieve at home. Natural sea sponges are not sold sterile and may carry residual marine debris like sand or bacteria. [1, 2, 3, 4, 5] Cleaning and Sanitizing Steps Initial check: Inspect new sponges closely and rinse them well in warm water to shake out any trapped particles. [1, 2] First-use preparation: Soak the sponge in a water and vinegar solution (1 part vinegar to 2 parts water) overnight to balance its pH, or optionally boil it gently for a short time. [1] Between uses during a period: Wash the sponge thoroughly with clean water and mild soap every 4 to 8 hours before reinsertion. [1, 2] End-of-cycle sanitization: Sanitize the sponge by soaking it in a diluted vinegar or baking soda solution, then let it air-dry completely in an open space. Avoid harsh chemicals or boiling for too long, which can ruin the delicate natural fibers. [1, 2] If you'd like, I can share tips on how to safely insert and remove a menstrual sponge or discuss the signs of infection to watch out for.