Is sulphas dangerous?

i know that it is dangerous for sure, but is it “deadly” ?

for example, rat poison that you get for house hold usage is dangerous, but it is not “deadly” anymore. they have reduced human toxicity. even if you eat it intentionally, you might fall sick and need to be admitted, but you won’t die from it.

what about sulphas? if i when i store it, someone consumes it by mistake is it 100% death?