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How to Empty a Catheter Bag Download Article Co-authored by Luba Lee, FNP-BC, MS and Dev Murphy, MA
Last Updated: October 5, 2025 Fact Checked
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Starting the Draining Process
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Emptying Your Bag
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Cleaning Your Bag After Emptying It
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This article was co-authored by Luba Lee, FNP-BC, MS and by wikiHow staff writer, Dev Murphy, MA. Luba Lee, FNP-BC is a Board-Certified Family Nurse Practitioner (FNP) and educator in Tennessee with over a decade of clinical experience. Luba has certifications in Pediatric Advanced Life Support (PALS), Emergency Medicine, Advanced Cardiac Life Support (ACLS), Team Building, and Critical Care Nursing. She received her Master of Science in Nursing (MSN) from the University of Tennessee in 2006. There are 10 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 248,966 times.
You may need to use a catheter at home if you are having difficulties urinating due to an illness, infection, or disease. You or a carer will need to empty the catheter bag to ensure you dispose of the urine properly. There are two types of catheter bags: large catheter bags and leg catheter bags. You and your carer should learn how to empty and clean both bags so that your catheter and its equipment are always sterile and clean.
Steps
Part 1 Part 1 of 3:
Starting the Draining Process
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1 Drain your bag before it gets full. Always aim to drain your bag when it's about ¾ full. If you're unsure about when you'll be able to drain your bag again, it's always better to drain a partially full bag then to let your bag overflow.[1]X Trustworthy Source Cleveland ClinicEducational website from one of the world's leading hospitals Go to source
For an overnight bag, you may need to drain every 4-8 hours. For a leg bag, you may need to drain every 3-4 hours.
2 Wash your hands with soap and warm water. Run your hands under warm water, then lather them with an antibacterial soap. Rinse your hands thoroughly under a constant flow of clean, running water until all the lather has washed away. Then, dry your hands completely using a new paper towel.[2]X Trustworthy Source Cleveland ClinicEducational website from one of the world's leading hospitals Go to source
Using a paper towel instead of a reusable towel or rag helps prevent the transmission of germs as you work with your bag. If you don't have paper towels available, though, a clean cloth towel will work. Just be sure it hasn't been used by others since it was last washed.
You may also put on a sterile set of disposable medical gloves if you have access to them.
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3 Rinse the skin around your catheter connection with soap and water. In addition to washing your hands, it's good practice to gently rinse the skin where your catheter enters your body. Wipe down the area with a clean paper towel soaked in a mixture of warm water and a mild soap. Then, rinse the area with warm water until all the soap is gone.[3]X Trustworthy Source National Health Service (UK)Public healthcare system of the UK Go to source
You can rinse the area either directly under a faucet or by wiping it down a few times with a wet towel or paper towel.
You should aim to rinse the area around your catheter connection at least twice a day. You should also clean the area immediately after any time you've had to handle your catheter connection.
4 Release your bag from its straps or holder. Once your hands and catheter connection are clean, you can release your leg bag from its straps. If you're using a large bag, remove the bag from its holder. Try to hold the bag below hip level as you drain it.[4]XResearch source
For an overnight bag, squeeze the plastic pieces on the drainage tube together gently until they come off the edge of the holder. Slowly slide the drainage tube out of the holder. Then, place the drainage tube over the toilet.[5]XResearch source
For a leg bag, point the drainage tube down into the toilet but do not let the tube touch the edges of the toilet.
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Emptying Your Bag
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1 Raise the drainage tube straight up. The drainage tube is at the end of the catheter tube.[6]XResearch source It is connected to the catheter tube with a plastic colored clip.[7]XResearch source
Make sure all the urine from the catheter tube drains into the catheter bag as you hold it straight. This will make it less messy when you empty it.
2 Position the bag over a toilet. This will make it easier to empty, as it will catch any overflow when you're detaching your bag. Be careful as you hold your bag over the toilet, though, as dropping your bag in the bowl would require you to replace it.[8]XResearch source
3 Remove the stopper or clamp on your bag. Your bag may have a stopper or clamp to prevent urine from leaking while your catheter is hooked up.[9]X Trustworthy Source Cleveland ClinicEducational website from one of the world's leading hospitals Go to source Remove this stopper with your bag over the toilet.[10]XResearch source
4 Empty your catheter leg bag using a valve. For a leg bag, turn the knob or valve at the bottom of the bag counter-clockwise to open it. Let the urine drain from the bag completely.[11]XResearch source Then, close the valve or knob by turning it back clockwise as far as it will go.[12]XResearch source
5 Empty your large bag by unclamping it. For a large bag, let the urine drain from the bag into the toilet.[13]XResearch source Once it has drained completely, close the metal clamp by pressing the metal pieces together.[14]XResearch source
You can then clip the drainage tube back into the holder and reuse the catheter, if it is reusable.
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Cleaning Your Bag After Emptying It
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1 Keep the bag detached from your catheter tubing. You can't effectively rinse your bag if it's attached to your tubing.[15]X Trustworthy Source Cleveland ClinicEducational website from one of the world's leading hospitals Go to source Do not replace your catheter tubing if you intend to clean your bag. Wait until after the bag is fully dry to reattach your tubes.
2 Pour a solution of soapy water into your bag. Mix 2-3 drops of mild detergent like dish soap into enough warm water to fill your bag. Pour the soapy solution into the bag and squish it around, making sure you get into the corners. Then, open the valve to drain the bag fully of all the soapy solution and suds.[16]XResearch source
3 Soak your catheter bag with vinegar diluted in water. Mix a solution of 1 part white vinegar with 3 parts warm water. Funnel this solution into your bag and seal your bag off. Let your bag soak for 20 minutes.[17]XResearch source
You should always rinse out the catheter bag before you reuse it. You should also rinse out the leg bag and let it dry if you are switching to a large catheter bag for the night.
You should clean the leg bag every day if you use it daily and replace it with a new bag once a month.
4 Rinse your bag with cold water. After your bag is done soaking, drain the vinegar solution out completely. Then, fill your bag with cold water and let it run through the bag's drain to completely remove the vinegar solution. Rinse your bag 2-3 times to get out all the vinegar wash.[18]XResearch source
5 Hang the bag up to dry. Squeeze as much water out of the bag as possible. Then, hang the bag up with the valve open so that additional moisture can drain out. Your bag should be completely dry before you reuse it.[19]X Trustworthy Source Cleveland ClinicEducational website from one of the world's leading hospitals Go to source
If you cannot hang your bag up for the moment, wipe it down with a clean, dry towel or paper towel.
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Co-authored by: Luba Lee, FNP-BC, MS Board-Certified Family Nurse Practitioner This article was co-authored by Luba Lee, FNP-BC, MS and by wikiHow staff writer, Dev Murphy, MA. Luba Lee, FNP-BC is a Board-Certified Family Nurse Practitioner (FNP) and educator in Tennessee with over a decade of clinical experience. Luba has certifications in Pediatric Advanced Life Support (PALS), Emergency Medicine, Advanced Cardiac Life Support (ACLS), Team Building, and Critical Care Nursing. She received her Master of Science in Nursing (MSN) from the University of Tennessee in 2006. This article has been viewed 248,966 times. 24 votes - 38% Co-authors: 10Updated: October 5, 2025 Views: 248,966 Categories: Medical Equipment
Medical Disclaimer
The content of this article is not intended to be a substitute for professional medical advice, examination, diagnosis, or treatment. You should always contact your doctor or other qualified healthcare professional before starting, changing, or stopping any kind of health treatment.
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Article SummaryX
Emptying a catheter bag isn’t the most pleasant job in the world, but fortunately, it’s relatively quick and straightforward. You’ll need to drain your catheter bag whenever it gets about ¾ full. For an overnight bag, this will be about every 4 to 8 hours, while leg bags generally need draining every 3 to 4 hours. Before you remove your bag, make sure you wash your hands and the skin around your bag to reduce the spread of bacteria. Then, release the bag from its straps or holder and point the drainage tube over the toilet in case any fluid spills out. Hold the bag over the toilet and remove the stopper or clamp to empty it. Then, reconnect the bag to your drainage tube. For more tips from our Medical co-author, including how to clean your catheter bag, read on.Did this summary help you?YesNo
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Co-authored by: Luba Lee, FNP-BC, MS Board-Certified Family Nurse Practitioner This article was co-authored by Luba Lee, FNP-BC, MS and by wikiHow staff writer, Dev Murphy, MA. Luba Lee, FNP-BC is a Board-Certified Family Nurse Practitioner (FNP) and educator in Tennessee with over a decade of clinical experience. Luba has certifications in Pediatric Advanced Life Support (PALS), Emergency Medicine, Advanced Cardiac Life Support (ACLS), Team Building, and Critical Care Nursing. She received her Master of Science in Nursing (MSN) from the University of Tennessee in 2006. This article has been viewed 248,966 times. 24 votes - 38% Co-authors: 10 Updated: October 5, 2025 Views: 248,966 Categories: Medical Equipment 
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1 Drain your bag before it gets full. Always aim to drain your bag when it's about ¾ full. If you're unsure about when you'll be able to drain your bag again, it's always better to drain a partially full bag then to let your bag overflow.[1] 
2 Wash your hands with soap and warm water. Run your hands under warm water, then lather them with an antibacterial soap. Rinse your hands thoroughly under a constant flow of clean, running water until all the lather has washed away. Then, dry your hands completely using a new paper towel.[2] 
3 Rinse the skin around your catheter connection with soap and water. In addition to washing your hands, it's good practice to gently rinse the skin where your catheter enters your body. Wipe down the area with a clean paper towel soaked in a mixture of warm water and a mild soap. Then, rinse the area with warm water until all the soap is gone.[3] 
4 Release your bag from its straps or holder. Once your hands and catheter connection are clean, you can release your leg bag from its straps. If you're using a large bag, remove the bag from its holder. Try to hold the bag below hip level as you drain it.[4] 
1 Raise the drainage tube straight up. The drainage tube is at the end of the catheter tube.[6] It is connected to the catheter tube with a plastic colored clip.[7] 
2 Position the bag over a toilet. This will make it easier to empty, as it will catch any overflow when you're detaching your bag. Be careful as you hold your bag over the toilet, though, as dropping your bag in the bowl would require you to replace it.[8] 
3 Remove the stopper or clamp on your bag. Your bag may have a stopper or clamp to prevent urine from leaking while your catheter is hooked up.[9] Remove this stopper with your bag over the toilet.[10] 
4 Empty your catheter leg bag using a valve. For a leg bag, turn the knob or valve at the bottom of the bag counter-clockwise to open it. Let the urine drain from the bag completely.[11] Then, close the valve or knob by turning it back clockwise as far as it will go.[12] 
5 Empty your large bag by unclamping it. For a large bag, let the urine drain from the bag into the toilet.[13] Once it has drained completely, close the metal clamp by pressing the metal pieces together.[14] 
1 Keep the bag detached from your catheter tubing. You can't effectively rinse your bag if it's attached to your tubing.[15] Do not replace your catheter tubing if you intend to clean your bag. Wait until after the bag is fully dry to reattach your tubes. 
2 Pour a solution of soapy water into your bag. Mix 2-3 drops of mild detergent like dish soap into enough warm water to fill your bag. Pour the soapy solution into the bag and squish it around, making sure you get into the corners. Then, open the valve to drain the bag fully of all the soapy solution and suds.[16] 
3 Soak your catheter bag with vinegar diluted in water. Mix a solution of 1 part white vinegar with 3 parts warm water. Funnel this solution into your bag and seal your bag off. Let your bag soak for 20 minutes.[17] 
4 Rinse your bag with cold water. After your bag is done soaking, drain the vinegar solution out completely. Then, fill your bag with cold water and let it run through the bag's drain to completely remove the vinegar solution. Rinse your bag 2-3 times to get out all the vinegar wash.[18] 
5 Hang the bag up to dry. Squeeze as much water out of the bag as possible. Then, hang the bag up with the valve open so that additional moisture can drain out. Your bag should be completely dry before you reuse it.[19] 