A PureWick external catheter should be replaced every 8 to 12 hours. This is the standard timeframe recommended by BD, the manufacturer, and it applies to the female external catheter used at home or in care facilities. The wick is single-use and should never be cleaned or reused.
The 8-to-12-Hour Replacement Window
Most caregivers find it easiest to build wick changes into a daily routine, swapping the device once in the morning and once before bed. That gives you two changes per day, which falls neatly within the 8-to-12-hour guideline. If you’re using the system overnight only, a single wick applied at bedtime and removed in the morning is typically sufficient for that stretch.
The male external catheter follows a slightly different schedule. Clinical trial protocols for the male version specify replacement every 24 hours, reflecting its different design and placement. If you’re using the male device, one change per day is the baseline.
When to Replace It Sooner
Regardless of how many hours it has been in use, replace the wick immediately if it becomes soiled with feces or blood. The device sits in close contact with sensitive skin, and contamination from a bowel movement creates a direct path for bacteria to reach the urethra. Don’t attempt to rinse or wipe the wick clean. Remove it, clean the skin, and apply a fresh one.
Other signs that a change is overdue include visible saturation (the wick looks or feels heavy with moisture and suction has slowed noticeably), the wick shifting out of position, or the user reporting discomfort or skin irritation. Some people with higher urine output may find the wick needs changing closer to every 8 hours rather than 12. If you’re consistently seeing reduced suction performance before the 12-hour mark, shorten your interval.
Canister and Tubing Maintenance
The collection canister and tubing are reusable, but they have their own replacement schedule. BD recommends replacing both the canister and tubing at least every 60 days. Between replacements, clean and disinfect them at least once daily.
Replace the canister or tubing immediately if you notice any of these:
- Residual urine buildup that doesn’t rinse away
- Cloudy or discolored tubing or canister walls
- Cracks in the canister
- Tears in the tubing
- A loose connection between the catheter and collector tubing
Any of these problems can reduce suction, cause leaks, or introduce bacteria into the system. Catching them early saves you from overnight failures and unexpected messes.
How Many Wicks You’ll Need Per Month
At two wicks per day, you’ll go through roughly 60 wicks in a 30-day month. If you’re using the device only at night, that drops to about 30 per month. BD sells wicks in packs designed for regular reordering, and the PureWick at Home website has a dedicated reorder page for replacement supplies.
Medicare does not automatically cover the PureWick system, but claims can be submitted for manual review on a case-by-case basis through the DME (durable medical equipment) process. If a claim is denied, you have the right to appeal. Private insurance coverage varies widely, so it’s worth calling your plan before assuming you’ll pay out of pocket for the ongoing supply costs.
Skin Care Between Changes
Each time you swap the wick, take a moment to inspect the skin in the perineal area. Look for redness, irritation, or any signs of moisture-related breakdown. Gently clean the area with a mild cleanser and pat it completely dry before placing the new wick. Moisture left on the skin defeats the purpose of the device and can lead to irritation over time.
Proper positioning matters too. A wick that’s placed slightly off-center or bunched up will saturate unevenly, reduce suction, and increase the chance of skin contact with urine. When you place a fresh wick, make sure it sits snugly along the length of the labia with the soft side facing the skin and the tubing connection trailing toward the collection unit without kinking.