MM, you fill your own salt buckets from what kind of store container?
25 or 50 lb bags. I buy it in bulk from places like WinnCo or my monthly order with Azure standard. Any of my local health food stores, which sell salt in the bulk bins, will also order a full bag at a discount for a customer when asked. Likely other discount, bulk stores carry salt in large bags too, I have seen it at Costco but not sure if it was regular salt or sea salt. When I ordered a full bag to be ready for me at WinnCo last June, there was a mix up and it wasnt there, and I only go by a WinnCO maybe once or twice a year, so I just got a bunch from their bulk bins, about 25 lbs worth at least, maybe 3 double bagged of their large, plastic bulk bags and brought that home to put in the gamma sealed bucket I had just emptied. So sometimes, like that, I may not fill up the bucket all the way, it is fine half filled.
My buckets in the pantry have color coded lids, salt is white, sugar is red, white four is orange, rolled oats is yellow, hard wheat berries is green, white rice is balck. Right behind the door ging into the laundry room/pantry, doesnt take much room. Do not stack them 3 high, the gamma lids cant always take the weight of 2 other full buckets on top, so just stack 2 high which is perfect for bucket in use now on top, and backup stores underneath, when you empty the top bucket, use the one underneath and put it on the list to get a new bag. This is rotated, in use stores. LTS is different and is in mylar bags, sealed, O2 absorber, inside a bucket with pound on lid.
I do keep a small 2 gallon bucket, with a small sized gamma lid, that I use for powdered sugar and brown sugar. These I buy in the regular small bags or boxes at the store, on sale. I take the inner bags out of the box, usually. You can fit alot of these in the one bucket. This keeps it fresh, and also is ant proof. There are ants here you never see unless you have sugar or crumbs or something, then they are all over it. It is nice for when a baking urge comes upon one of us, there are stores of specialty sugar, and all other staples, and butter in the freezer
https://www.wincofoods.com/shop#/product/167807https://www.azurestandard.com/shop/product/food/baking-pantry/salt/sea/sea-salt/10607?package=BP067