Cleaning ibc tote

May have put this in the wrong spot. Sorry. Recently purchased 2 food grade Ibc totes. one t contained molasses and one glycerine. Curious if any of you have experience cleaning these things out. Was thinking about bringing them to a car wash to rinse any residues, but would like to clean them further As I will be using the to store water for plants. Thanks

I wash mine after each winter with a power washer similar to those at the car washes. No soap, just high pressure water. It works well. Once considered using bleach &/or hydrogen peroxide to help but never found that to be necessary. I try to avoid even trace residual amounts of chemicals in the garden. For that reason I would be hesitant to use the glycol IBC for food gardens but realistically that would probably be ok after a good power wash.

A first flush diverter or some other pre-filtering goes a long way towards keeping captured rainwater containers clean.

I've had to clean some with brown rice syrup residue, in coldish weather.

Hot water was critical, it was just futile without. I used a garden hose run straight to the landlords hotnwater tank, a sprayer, a tiny bit of dish soap and a fair bit of patience. (The pressure washer wouldn't start... I'm sure it would have helped, as long as I ran hot water through it.)

I washed them in the same area the landlord would pressure wash the heavy equipment, so didn't feel too bad about a few drops of soap in that context!

Just use a mild soap and pressure washer. Even if there are residues left in crevices they wouldn't be harmful for the plants.

I cleaned a PVA glue IBC with a steel sponge and pressure washer; another with saline in it washed just with water, they are my aquaponics  right now.

How do you guys pressure wash the inside top of the IBC?  I can see how you could reach in and do the sides and bottom easily enough.  Do you reach your whole arm in so that you can shoot the water back at the top?

FYI I've heard that they make IBC tank liners that you can buy.  Might be an option if someone has a non food grade one.  I'm not sure how they work down at the outlet valve.

Feb 2025.                     Cleaning IBCs
The liners seem to be too expensive and sold in packs of 1000s. If anyone gets a line on an affordable way to buy 3 or 5 of them,  I'd like to know.

Ive been reading comments on you tube etc and it seems whatever cleaning solution one uses, a popular low-tech cleaning method is to only fill the tote about 1/8 full and let it sit for 1-2 days then rotate so each if the 6 sides of the cube get soaked for a day or two. Then rinse.

But I haven't been able to find clear advice on how much cleaning product to use.

Any ideas?
Unfortunately theres nothing to i.d. what was truly in these ibcs before. So I made a list of what cleaning products to try. First ill try sodium carbonate (washing soda). If it doesnt get rid of the odor im smelling, ill try oxyclean next, and if I have to go more caustic, I'll try lye. But finding advice on quantities is challenging.

Anyone have experience using any of these?