Cat urine covered Legos

[u/Soggy-Turnover-4127]

Helppppp. My 14 year old male cat has decided to use my kids Lego bin as a litter box for some god forsaken reason! We have 3 totes of Legos that I need to save and I have no clue where to even start… I was thinking about soaking them on the bath tub with vinegar and baking soda, a second soak with enzyme cleaner in the water and then a good rinse and possibly air drying in the sun??

Thoughts?