That phrase is almost always clickbait for a homemade weed-killer mix, not a real “permanent weed eliminator.”
What it usually refers to is one of these:
🔥 1. Vinegar + salt + dish soap
- Vinegar (acetic acid) burns the leaves fast (sometimes within hours–1 day)
- Salt damages plant cells and dehydrates them
- Soap helps it stick
✔ Works fast on visible weeds
❌ Does NOT reliably kill roots
❌ Can damage soil for a long time (salt buildup can make ground worse for future plants)
🔥 2. Boiling water or flame
- Instant visible damage
- Cheap and chemical-free
✔ Quick results
❌ Weeds often grow back from roots
🔥 3. Strong chemical herbicides
- Some products can kill roots if absorbed properly
- Still takes days, not 1 day
- Even then, “never grow again” is not guaranteed outdoors
🚫 The truth about “never grow again”
No spray or DIY mix makes weeds permanently disappear because:
- Weed seeds already exist in the soil for years
- Wind and birds keep adding new seeds
- Many weeds regrow from deep roots
👍 What actually works long-term
- Pulling weeds + removing roots
- Mulch or ground cover (blocks sunlight)
- Pre-emergent weed control before growth starts
If you tell me where the weeds are (driveway, garden, cracks, lawn), I can suggest the most effective method that actually lasts in that situation.
