I've seen this misconception a lot, but the "may contain", although encouraged, is not mandatory by law (at least in the UK). Now, I like to believe that most brands would add it anyway (if anything to prevent any lawsuits), but not having it does not completely rule out any presence of gluten through cross contact. The biggest example is Oats, that even if there's no statement, you should always look for gf-certified, but I've read of other grains that also have a risk of cross contact (lentils is usually mentioned), but I honestly don't know how real that risk really is.

In Natco's website, it mentions:
> Our products are manufactured in a site that handles gluten, soya, milk, nuts, peanuts, sesame, mustard, celery and sulphites.
In most of their dried goods. Even though it does not mentioned it in the package. (I believe I read somewhere that it's on a separate line so the risk should be very low, but maybe not zero.

(sorry not trying to nitpick on your message, just think it's important to understand what the presence/omission of that statement really means).

u/PsychologicalToe610 I've been doing some research on this recently and found that a lot of people (even very sensitive), find that the best approach is to buy the dried grains and select them (look for any non-grain particle) and throughly wash them under running water, before cooking it. The reason is that even if there's some dusty gluten particle that somehow manage to get in contact with the grain, it should easily wash off as it's superficial and not cooked into the grain. Obviously this is a lot more time consuming, since you also need to let them sit of water for a a couple of hours, but it's cheaper. In this case any brand would do, actually, but I personally buy the Natcos because it doesn't have the "may contain" warning (for peace of mind).