Jehovah's witnesses, what steps do you take to ensure that you are abstaining from blood when you eat meat?

Please bear with me for rephrasing a previous question, but I have not received satisfactory answers from Jws yet. The best answer so far is that they rely on the government. Who in their right mind trusts the government when your eternal salvation is at stake? For those wondering what this question is all about, Jehovahs will allow a loved one to die rather than accept a drop of blood transfused into their veins. So Why are they so blase about their meat?