Do you buy any products that have a may contain?

I’ve been vegan for about a month now, there are still some products I’ve bought that don’t have any animal products in the ingredients, but won’t be officially certified vegan, or might have a may contain milk sign. I’ve seen this is usually because the factory it’s produced in also produces non vegan products, so on a microscopic scale there may be remnants of milk etc. What do you guys think of buying those kind of products as a vegan?