Know before you mix.
Check if two household cleaning products are safe to use together. 156 products. 30 interaction rules. Zero guesswork.
Why This Matters
Source: National Poison Data System (NPDS) 2024 Annual Report, American Association of Poison Control Centers
How the Verdict System Works
No known harmful interaction between the chemical classes in these products. You can use them on the same surface or in the same session. Always follow each product's individual instructions.
Possible mild reaction or reduced effectiveness when combined. Use in a well-ventilated area, rinse surfaces between products, and avoid direct mixing in a container. Not immediately dangerous but not recommended.
Known toxic reaction that produces hazardous gases or corrosive compounds. Never combine these products. If accidental mixing occurs, leave the area immediately and call Poison Control at 1-800-222-1222.
How Cleange Works
Select Two Products
Search our database of 156 household cleaning products by name, brand, or chemical type. Pick the two products you want to use together.
Get an Instant Verdict
Our engine checks the chemical classes of each product against 30 interaction rules and returns a clear Safe, Caution, or Danger verdict.
Understand the Chemistry
See the exact chemical reaction, what gas or compound is produced, and why the combination is dangerous — in plain language.
Know the First Aid
Every dangerous result includes step-by-step first-aid instructions and a direct link to Poison Control (1-800-222-1222).
Frequently Asked Questions
Is this tool a replacement for reading product labels?
No. Always read and follow manufacturer instructions. Cleange is a reference tool that identifies known dangerous chemical interactions. When in doubt, use one product at a time and never mix cleaning products.
How does Cleange determine if two products are safe to mix?
Each product in our database is mapped to its active chemical ingredients and classified by chemical type (hypochlorite, ammonia, acid, etc.). Our engine checks every combination of chemical classes between two products against known interaction rules derived from published toxicology references and CDC/EPA guidelines.
What should I do if I accidentally mix two dangerous products?
Leave the area immediately and move to fresh air. Open windows and doors to ventilate. Call Poison Control at 1-800-222-1222 (available 24/7, free, and confidential). If anyone has difficulty breathing, call 911.
Does Cleange store any personal data?
No. Cleange runs entirely in your browser. No data is sent to any server. Your product selections are not tracked, stored, or shared. All safety checks happen client-side using a local database.
What are the most dangerous household chemicals to mix?
Bleach (sodium hypochlorite) with ammonia-based cleaners produces chloramine gas, which causes severe respiratory damage. Bleach with acid-based cleaners (like toilet bowl cleaner) produces chlorine gas, which is even more dangerous. Both can be life-threatening in enclosed spaces like bathrooms.
Can I safely mix vinegar and baking soda?
Yes — this is one of the few genuinely safe combinations. Vinegar (acetic acid) and baking soda (sodium bicarbonate) react to produce water, sodium acetate, and carbon dioxide (the fizzing). The result is essentially salt water. It’s safe but largely ineffective as a cleaner because the active ingredients neutralize each other.
Why is mixing bleach with other cleaners so dangerous?
Sodium hypochlorite (the active ingredient in bleach) is highly reactive. With ammonia it produces chloramine gas. With acids it produces chlorine gas. With rubbing alcohol it produces chloroform. With hydrogen peroxide it produces oxygen gas forcefully. Bleach should only ever be diluted with plain water.
How long should I wait between using different cleaning products on the same surface?
Rinse the surface thoroughly with plain water and allow it to dry completely before applying a different product. Chemical residue from the first product can react with the second. For the safest approach, use only one type of cleaner per cleaning session.
What cleaning products are generally safe to combine?
Surfactant-only products — dish soaps, plant-based all-purpose cleaners, and most laundry detergents — are chemically compatible with nearly everything. They don’t contain reactive ingredients like bleach, ammonia, or strong acids. When in doubt, check with the Mix Checker.
How can I identify what chemicals are in my cleaning products?
Check the product label for active ingredients and warnings. The Safety Data Sheet (SDS), available on the manufacturer’s website, lists all chemical components. Cleange classifies products by their active chemical class so you don’t need to interpret chemical names yourself.
Data Sources & Methodology
- Interaction rules derived from CDC chemical safety guidelines, EPA CAMEO reactivity data, and published toxicology literature
- Products classified by active chemical class (hypochlorite, ammonia, acid, peroxide, etc.) rather than brand-specific formulations
- Conservative approach: the engine flags potential reactions even at low concentrations — a false caution is safer than a missed danger
- All processing runs in your browser. No product selections are sent to any server, stored, or shared
- Cleange is a reference tool, not medical advice. Always call Poison Control (1-800-222-1222) for exposure emergencies