I bought an older version of this one...
https://www.amazon.com/gp/product/B07HRF4KJF/?tag=fabo03-20
I start with straight hot water from my tap & I set the heat to it's max heat setting which on my unit is 200 degrees Fahrenheit, I let the unit heat the solution for 4-6 hours till it gets up to full temperature...
I use a commercial automotive cleaner sold by Automagic called 713, it is similar to Simple Green.... Or not, it doesn't effect aluminum, it just cleans it..
Once up to temp I put the carb in the tank & turn on the sonic function typically for 30-45 minutes...
Pull the carb out as soon as it times out & rinse... It should be good but if not back in the tank for more time...
Do not let the tank cool before pulling the parts out, the crud will just reattach itself to the part..
Plus if it's not clean enough you'd have to re-heat... Once the solution cools it takes for ever to get back up to temp & it's never as effective once re-heated...