do not touch
Not trash. Do not touch.
(Our office cleaning crew took my recycling even though it had a sign that said "recycle" on the can, so I'm trying to communicate to them that this is not trash.)
Un simple "No es basura, no tocar" would suffice.
You could perhaps relabel your sign.
Reciclaje: no lo tire por favor
You could also say:
No es basura. No llevarlo.
This is not trash. Do not take it.
No es basura. Por favor, no la toque.
No lo toque.