If you enjoy ALL catheters, as I certainly DO: rectal, colon, nasal, stomach, and URINARY, there is a real chance of getting an E. coli urinary tract infection, despite your best efforts at keeping things sterile.Suzanne Somers in her book "BREAKTHOUGH" [Crown Publishers / Random House, 2008] describes a natural treatment for bladder infections told to her by Dr. Joanathan Wright, MD. (pages 27-2😎. The everyday form of E. coli, which should reside in the colon and should not take up residency in the urinary tract / bladder can easily travel the short distance in women and with a bit more effort in men - especially those using urinary catheters, whether for medical necessity or for delightful internal prostate stimulating pleasures.[Guys, if you haven't tried this, you're really missing something. It is especially pleasing to have your playmate do it to you! A good place to get silicone urinary catheters - much better than latex - over the internet is Allegro Medical.]The customary treatment is an antibiotic, but there is a "much healthier" treatment that Dr. Wright reports working 90% of the time using a natural substance D-mannaose, a form of sugar, that is normally in the bladder in small quantities. E. coli feasts on D-mannose and reproduces wildly, leading to the original bladder infection. However, if one takes D-mannose (available is most health food stores), it goes quickly to the bladder where the E. coli jumps off the walls of the bladder and onto the free floating D-mannose, which is then eliminated on the next urination. Dr. Wright recommends 3 to 5 grams every three hours until the symptions are gone, or if not gone or improved in 24 hours, it's time to use an antibiotic.I have personally tried D-mannose with complete success. It avoids unnecessary use of antibiotics, and for us males, having to explain to a prescribing doctor how we might have contracted this typically female problem !