The rust normally due to circumstances, it can be clean up, solution as below.
Depending on the severity of the rust spots, using rust remover or ethanol, wiping it with a household dishcloth, like below, the green part.
SUS304 come up small rust spots after 72 hours of salt spray test. If customer purchased the fire pit for no more than 6 months, the 304 stainless steel doesn’t rust so badly in such a short time, even near the coast.
The rust is not the product itself, but the rusty substance in the air adheres to the surface of the lid because it has not been cleaned up in time, there are more such substances in the seaside environment, and it is easier to rust. Customer probably didn’t use the canvas cover either.
We suggest customer clean product surface regularly and use the canvas cover.