If I leak a little, can I wear regular panty liner or should I pay more for those special ones?

Fully your choice. Choose what you feel most comfortable and secure with. Patients who experience incontinence vary widely in their comfort and tolerance for leakage. Liners are the least cumbersome and are easily changed, but do not offer the protection of products like poise pads or full adult diapers if you have higher volume leakage. Feel free to ask your urologist or gynecologist for samples or recommendations.