I just went through the same thing.

I buried them for 2 days.......

Washed and SCRUBBED with baking soda pase

Scrubbed with dirty stinky rag I found buried in yard

Sprayed with scent killer

Had them outside for 2 weeks now....

They still smell like rubber - I even called LaCrosse about it and they offered no help or advice.........

I bought the boots 3 weeks ago and I ve tried everything as you can see......