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How to Clean A Cement Bird Bath in Just Minutes

It is easy to clean a cement bird bath to make it a safe and fun place for birds to enjoy. All you need are a few common supplies and minutes of your time.

After a long summer of use, a bird bath can be getting pretty grimy this time of the year. Algae grows quickly in the heat and it’s hard to manage all the garden tasks as well as cleaning a bird bath.

I admit it. I am not the best housekeeper in the world. I’d rather spend time in my garden. But even normal gardening chores have piled up on me this summer.

One of those jobs is cleaning my dirty bird bath. I change the water on it regularly but the hot and humid summers here in the Southeastern part of the USA have given me what seems like a big project to do.

Dirty bird bath in a garden bed that needs weeding.

Are you in a similar bind? This project will make short work of the problem. With just a few supplies, it’s easy to turn a dirty bird bath into one that the birds will love to visit in no time flat.

The above scene is lovely but a close up shows just how disgusting the bird bath had gotten over the last month or so since I cleaned it out.

Sunlight, humidity and garden debris can make a mess of a bird bath. Find out how to clean one in just minutes with three common household ingredients. 🦜🦅🕊🐦 Click To Tweet

Why clean a dirty bird bath?

Aside from the obvious nasty looking structure in your garden, there are other reasons to keep the bird bath clean.

Dirty and clean bird bath with text overlay reading from this to this, in just minutes!

Dirty bird baths will keep the birds away from the water source, since they are looking for clean liquids to wet their wings and moisten their lips.

The dirty water not only keeps birds from using the water, it also can spread diseases to all sorts of backyard birds if it is used.

Additionally, the dirty water will become a breeding ground for insect populations such as gnats and mosquitoes which can be problematic for humans, as well as birds.

If you have mosquitoes in your yard, be sure to check out my essential oil homemade mosquito repellent. It works like a charm.

Dirty bird bath with algae

Dirty bird bath water will also have an odor which attracts other pests, such as rats and mice, and the smell is definitely not pleasant to people.

Eventually, if a bird bath is left uncleaned for a long period of time, the algae and soil will accumulate to such a degree that it will stain the structure so that it will be hard to clean.

And most of all, clean birdbath water will attract lots of birds to your yard!

How often should you clean a bird bath?

There is no definitive answer to this question, since the weather in your area, how many birds use the bath, and the quality of the water all play a roll in how dirty a bird bath can get.

The smaller your bird bath is, especially if coupled with a large flock of birds, the more you will be cleaning it.

Cleaning the bird bath with jets of water and a strong spray 2-3 times a week, or when you start to see discoloration and the bottom of the basin is suggested as a normal summer routine.

During the summer months, when the weather is hot and humid, you may find that the birdbath becomes discolored more often and may need a stronger cleaning routine.

This is also true in the fall months, when leaves are falling and debris will end up in the bowl of the bird bath.

But if you neglect normal bird batch cleaning, then heavier cleaning will need to be done if you have let the bird bath get dirty and have to remedy this situation. So let’s get cleaning!

Clean birdbath with text reading How to clean a dirty bird bath in just minutes.

How to clean a cement bird bath

It is important to remove the debris that is in the bird bath. The water contains an accumulation of all sorts of bacteria and debris, including bird feces.

To remove the water, I just tipped it slightly on its side and let the water run into the surrounding garden. This close up shows just what needs to be removed.

Scum in a bird bath.

The next step is to use the hose to remove what you can. I used the highest pressure setting on my hose and then scrubbed the bird bath with a scrubbing brush.

Surprisingly, I got a great deal of the dirt out just doing this! It looks reasonably clean but you can still see some residue that the brush did not get.

Scrubbing brush in a bird bath.To get it cleaner you will need these items: A 40 gallon black trash bag and some liquid bleach.

Black bag, scrub brush and bleach on a lawn.The next step to clean a cement bird bath is very important. Refill your bird bath. Bleach is highly toxic and needs to be diluted.

I used about 3/4 cup to a gallon of water. Fill the bath up above any stain marks and add the bleach.

Bottle of bleach in a bird bath.At this point, the bath will need to be left for about 15-20 minutes. (longer if it is very dirty.) Cover the whole bird bath with a black plastic bag and leave it to sit.

This black bag step is necessary because the water in the bath will be attractive to birds now that it is clean and you don’t want them to be drinking the bleach solution.

The black color of the bag will also absorb the rays of the sun to heat the water up. This helps to clean the bird bath quickly.

Covered bird bath with a black plastic garbage bag in a garden.

When you remove the plastic bag, your bird bath should look like new. If it still has algae or scum in it, just replace the bag for a bit longer.

You can save the plastic bag to use again the next time you need to clean your bird bath.

The whole process takes about 30 minutes, unless your bird bath is very, very dirty and has been neglected for a long time.

Get the bird bath ready for the birds

Drain out the water. I used old sponges to sop it up and put into a pail to discard. I did not want the chlorine bleach to get onto the nearby plants. Once you have removed the chlorinated water, be sure to rinse the bath thoroughly.

Once again, I used the pressure setting and let the water run into it for about 2 minutes. Tilt the bath and be sure to get every part of the bird bath rinsed.

You will have a good idea if you have rinsed enough by smelling the bath. If you can smell chlorine, keep rinsing.

It is a good idea to let the bird bath dry in the sun for a while before putting in fresh water. This will help to sterilize the surface of the bird bath against bacteria.

The basin will dry in just a few minutes on a hot sunny day. This step is not crucial but is a good idea.

Clean Bird bath in a garden bed.Now refill with clean fresh water and your bird bath is clean and safe for your birds to enjoy. The bath will remain clean for several days and you can help to keep it clean longer by pressure rinsing and refilling the bath daily.

With proper care, you will only need to occasionally use the bleach method as the bird bath cleaner. Hopefully, mine will not get to the awful state shown above for a long time to come!

clean birdbath in a garden bed.Much better than the initial picture above, don’t you think?

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How to keep a bird bath clean

There are a few things that you can do to ensure that the bird bath doesn’t get so dirty in future.Clean bird bath with water in it.

  • Position your bird bath so that it is not under bird feeders or woody trees which will allow debris and seeds to get into the water. You can position it near a feeder but not under it.
  • Place your bird bath in a shady position. This minimizes algae growth and slows the evaporation of the water.
  • Change the water daily to prevent build up of algae.
  • When adding water, dump out the old water, so that the entire basin has clean water in it.
  • Bird baths with a fountain pump as part of the design keeps the water moving which helps with cleanliness. This a discourages mosquitoes.
  • A deicer in your birdbath in the colder months will help to keep it from freezing.
  • Biodegradable balls (available at hardware stores) are designed to keep algae out of ponds. These can also help to keep birdbaths clean if it has a large bowl area.
  • Bird bath enzymes work well in small areas like a bird bath to keep them clean.

There are lots of other ways to clean a concrete bird bath. I also tested alka seltzer and copper pipes recently. See my test results on this method here.

If you don’t like the idea of using bleach, white vinegar and water does a pretty good job of cleaning a bird bath, but it does not kill the pathogens.

How do you keep your bird bath clean? Please leave your suggestions below.

Pin this post for cleaning bird baths for later

Would you like a reminder of these tips for how to clean a bird bath? Just pin this image to one of your gardening boards on Pinterest, so that you can easily find it later.

clean and dirty birdbath in a collage with text reading How to Clean a Cement Bird Bath.Admin note: this post for tips to clean a cement bird bath first appeared on my blog in August of 2013. I have updated it to include some new photos, a printable project card, tips for keeping the bird bath clean and a video for you to enjoy.

Yield: 1 clean bird bath

How to Clean A Cement Bird Bath in Just Minutes

Clean Bird bath

Bird baths can get very dirty, especially in the hot summer months. Use these instructions with just a few supplies to get yours sparkling clean in just minutes.

Active Time 10 minutes
Additional Time 20 minutes
Total Time 30 minutes
Difficulty easy
Estimated Cost $2


  • Liquid bleach
  • Water
  • Black 40 gallon trash bag


  • Scrubbing Bruch


  1. Use the highest pressure on your hose attachment to remove as much of the debris and grit as you can from the bird bath.
  2. Scrub the basin with the scrubbing brush to remove the grime residue, some stains will still remain.
  3. Refill the bird bath with water above the stain lines. (I used 3/4 cup of bleach for each gallon on water.)
  4. Cover with the black bag and leave in the sun for 15-20 minutes. The heat of the sun will warm the water inside the black plastic and clean the bird bath for you.
  5. Remove the bag. If any reside and stains remain, replace for a bit longer.
  6. Remove the bag when clean and keep it to use the next time you clean.
  7. Drain out the water and use the hose with a high pressure nozzle again to clean out the water with bleach in it. (see note below about bleach and plants)
  8. Smell. If any Bleach odor is present, rinse some more. You don't want any residue of bleach to remain in the bird bath.
  9. Allow the bird bath to dry in the sun for 5-10 minutes or so. This will help to disinfect.
  10. Fill the bird bath with water and welcome the birds back.


Be careful of getting the bleach water on nearby plants since this can kill them. I used sponges and a bucket to remove my bleach diluted water.

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Tuesday 4th of July 2023

I use oxy granules instead of bleach, and let the solution soak a while. Less dangerous for me and plants.


Thursday 16th of March 2023

I was told putting some Pennie’s in your bird bath will keep it clean. Will try it this summer


Saturday 12th of November 2022

My hateful neighbor put pool cleaner in my birdbath to stop my birds from coming. It was much cleaner than I get with bleach, however misersble he is. I moved my birdbath to a spot under the trees but they seldom used it. When I moved it back to the flowerbed and changed the water every day, they came back.

Cheryl Lambert

Saturday 2nd of July 2022

Thank you so much for the info. We have a bird bath just like yours and I’m always frustrated because it gets dirty so fast. Someone told me to put a penny in the bottom after I cleaned it.

Something with the copper is supposed to help keep it clean. And you know what? It works. It gets pretty hot where we live and this bird bath would turn color within a couple of days. But since I put the penny in there it’s staying nice and clean. Thank you again for the info, I now know what to use to do my deep cleaning.



Monday 19th of October 2020

Is there a safe paint I can use on the inside of the birdbath to make it easier to clean and keep clean?

Jean Carlson

Thursday 17th of June 2021

@Carol Speake, hi this is related to a cement bird bath. My birdbath base and top are separate. Several years ago my basin broke. The squirrels like to take a drink, too, but they are a lot heavier. I finally broke down and purchased another basin. Now I place a brick in the center (it’s and antique brick) and placed some rocks on top of the brick.Hopefully the brick and rocks will provide enough weight to avoid breakage.

Thanks for the tips on cleaning the basin!

Carol Speake

Tuesday 20th of October 2020

That is not something I can recommend, since I have tried one. Perhaps a reader can help.

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