This type of dramatic warning often appears on social media and in “chain” posts. Although it seems scary, let’s analyze these “black balls” rationally. In most cases, they aren’t aliens or a conspiracy, but one of the following:

Caterpillar droppings (Death’s Head or other large caterpillars)
If you find black balls on your terrace or under plants that look like small “grenades” or grooved barrels, they are most often the droppings of large caterpillars.
Danger: They are practically harmless to humans and animals, but they do mean that something is rapidly devouring your garden.

Ticks (the egg myth)
The myth that black balls in the grass are tick eggs is often spread.
Reality: Ticks lay thousands of eggs, but they are microscopic and clustered, barely visible to the naked eye as individual black balls. The real danger is the adult tick, not a pile of “seeds” on the ground.

Poisonous seeds (e.g., castor oil)
Here we encounter a real danger. The seeds of the Ricinus communis plant look like beautiful marbled beans (often dark in color).
Danger: They contain ricin, one of the most potent natural poisons. Even a few chewed seeds can be fatal to a child or dog.
What to do: If you suspect the presence of this plant, handle it only with gloves and keep it out of reach of children.

Mouse or rat droppings
If the balls are small, elongated, and shiny, they could be rodent droppings.
Danger: Rodents transmit various diseases (e.g., salmonellosis or leptospirosis), which can endanger pets and people through contaminated soil or water.
⚠️ What should you watch out for?
If you find something suspicious in your garden:

Do not touch it with your bare hands.
Monitor your pets: If your dog starts drooling, vomiting, or becoming lethargic after “tasting” your garden, see your vet immediately.
Identify plants: Use a plant identification app to see if anything toxic (besides ricin, such as deadly nightshade or yarrow) is growing in your garden.
Want me to help you identify something specific based on a more detailed description (size, shape, exact location)?