You need thicker Aluminum Foil. That Dollar Tree stuff just don’t protect as well..........................
I think the real problem is that Aluminum is not Tin. If you want real protection from brain invading waves, you really need Tin Foil. Have you seen any for sale lately? It's proof of a conspiracy to suppress the availability of the good stuff, Tin Foil, that really will protect you! See? Just try and find real Tin Foil these days, not that crappy Aluminum stuff! It leaks like a sieve.