Baking soda gender prediction.. did anyone try???

Pooja • Baby boy born on march 7th 2016.He is gonna be a big brother soon.. expecting second baby on april 2018

I have a son and I am second time pregnant now.. I tried baking soda gender test when i was pregnant first and it did fizzle like a soda. so the result was true for my son. Again this time I tried the test and it did not fizzle. so does that means I am going to have a girl???

what do you all think?? did anyone try this test with 1st and second pregnancy??? was the result accurate??? please let me know..