Set-in grime, dingy cuffs, and mystery splatters can make an ordinary wash load act like it suddenly forgot its job. This homemade laundry pre-treat spray gives you a quick way to hit the worst spots before clothes go into the washer. Spray, wash, and move on with your day like the stain drama never happened (a rare household miracle).
Making your own can cost less per ounce than buying a ready-made pre-treat spray. Using current Walmart pricing, this batch works out to roughly $0.11 per 22 ounces, compared with about $2.98 for a 22-ounce bottle of Spray ‘n Wash. It also lets you control the exact formula and skip added fragrance choices you may not want in a laundry pre-treat.
You only need 5 materials for this batch: household ammonia, water, Dawn dish detergent, white vinegar, and baking soda. The directions call for a spray bottle, and a funnel helps keep the mixing process much less exciting than it needs to be.
- 🧰 Materials You'll Need
- 🔧 Tools & Equipment
- 🛠️ How to Make Laundry Pre-Treat Spray
- 🛠️ How to Use It
- 🎨 Customization Ideas
- 🛡️ Safety Information
- 📦 Storage
- 💸 Cost Breakdown
- 🛍️ Need Help Finding Everything?
- ❓ Frequently Asked Questions about Laundry Pre-Treat Spray
- 📌 Love this Laundry Pre-Treat Spray? Pin it!
- 🖨️ Print-Friendly How-To: Laundry Pre-Treat Spray
Materials You’ll Need
- 1/2 cup household ammonia
- 1/2 gallon water
- 2 tablespoons Dawn Dish Detergent
- 1/2 cup white vinegar
- 1/4 cup baking soda
Tools & Equipment
- Spray bottle
- Funnel, optional but helpful
How to Make Laundry Pre-Treat Spray
- Pour the household ammonia, water, Dawn dish detergent, white vinegar, and baking soda into a spray bottle.
- Shake well to combine.
That is the full formula: Put all ingredients in a spray bottle and shake well.
How to Use It
- Spray all hard-to-clean areas of clothing before washing.
- Launder as usual.
If you like making your own laundry basics, you might also want to try Make Your Own Laundry Detergents, Stain Removers, Pre-Wash Sprays and More! or a batch of Liquid Laundry Detergent.
Customization Ideas
- Mix this in a smaller working bottle and keep the extra batch in a clearly labeled backup container if that fits your laundry space better.
- Use a dedicated laundry-area spray bottle so nobody mistakes it for an all-purpose cleaner.
- Pair it with your usual homemade or store-bought detergent routine for heavily soiled clothing.
Safety Information
Label the bottle clearly and keep it out of reach of children and pets. Do not mix this spray with bleach or use it in the same container as bleach products. The National Capital Poison Center notes that bleach should not be mixed with ammonia or acids such as vinegar, so keep this pre-treat separate from bleach-based laundry products and rinse bottles well before reusing them.
Storage
Store the spray in a tightly closed, clearly labeled bottle in your laundry area. Keep it away from heat and from any products that contain bleach.
Cost Breakdown
- 1/2 cup household ammonia: about $0.13
- 2 tablespoons Dawn Dish Detergent: about $0.09
- 1/2 cup white vinegar: about $0.18
- 1/4 cup baking soda: about $0.11
- 1/2 gallon water: negligible household cost
- Estimated total batch cost: about $0.51
That estimate is based on current Walmart pricing for Great Value Clear Ammonia 64 fl oz at $2.12, Dawn Ultra 18 fl oz at $2.94, and Great Value All Purpose Vinegar Cleaning Solution 64 fl oz at $2.94, plus a conservative baking soda estimate. Prices vary by store and region, but the batch still comes in far below a ready-made 22-ounce laundry pre-treat spray.
🛍️ Need Help Finding Everything?
- Great Value Clear Ammonia, 64 fl oz
- Dawn Dish Detergent
- Great Value All Purpose Vinegar Cleaning Solution, 64 fl oz
- Baking Soda, 16 oz
- Spray Bottle
- Make Your Own Laundry Detergents, Stain Removers, Pre-Wash Sprays and More!
Frequently Asked Questions about Laundry Pre-Treat Spray
Use it as a general pre-treat for hard-to-clean areas of clothing before washing, just like the directions say. Since fabrics and stains vary, test it on a hidden spot first if you are working with delicate, bright, or specialty items.
Yes. The original method says to shake well, and giving it a quick shake before spraying helps redistribute the mixture if it has been sitting on the shelf.
This formula is written as a spray pre-treat, not a detergent or wash additive. Spray the stained or hard-to-clean areas first, then wash the clothing as usual.
Choose a bottle large enough for the batch you want to mix or divide the formula between containers. A funnel makes filling the bottle much easier and keeps the counter cleanup to a minimum.
Do not reuse a bleach bottle or any container that still has bleach residue in it. This formula contains ammonia and vinegar, so it needs its own clean, clearly labeled container.
In this formula, the dish detergent helps the spray spread through greasy or grimy spots instead of beading up and running off right away. It is there as part of the original blend, not as a separate wash step.
Absolutely. This is a laundry product, not an all-purpose spray, and the bottle should be labeled so nobody mistakes it for something else.
The directions simply say to spray all hard-to-clean areas of clothing before washing. Since no standing time is given, you can treat the area and move straight into your usual wash routine.
Usually, yes. This batch uses inexpensive household materials and makes far more than a single store bottle, so the cost per ounce is very low even when prices shift a bit.
📌 Love this Laundry Pre-Treat Spray? Pin it!
Did you try this project? Tell us how you use this pre-treat spray in your laundry routine or what stubborn spots you tackled first.
Shouldn’t be mixing ammonia and vinegar (base and acid) they will just react with each other leaving salt and water, use one or the other.