… 100% biologically degradable.

Many manufacturers label their products “100% biodegradable”.

But:
How long does it take for the substance to degrade?
After 20 years even the most aggressive oven or grill cleaner is completely degraded.

How effective is the cleaning product?
Many products are highly biodegradable because of their plant content, but their effectiveness is considerably reduced, making them completely unsuitable for efficient and rapid cleaning.