Inclusion Criteria:  - Patient under age of 80 years old who need prolonged urethral catheterization (more than 2 weeks) as a method of bladder drainage.  Exclusion Criteria:  Patients with current or recent symptomatic urinary tract infection. Antibiotic use currently or within 7 days prior to inclusion. Known hypersensitivity to latex, silver salts or hydrogel. Patients with recent surgical intervention in the urinary tract. Patients with anatomic or functional upper urinary tract issues (e.g reflux, stones, etc.) Uncontrolled DM. Patients on corticosteroid treatment. Immunosuppressed patients. Patients received pelvic irradiation.