I have two Fry Daddy's. One is always at the ready. After use, I unplug it and allow to cool until the next time. I will strain it if there are many particles.
I might use the same oil several times. The Fry Daddy has a plastic lid you can use to cover it when not in use. My first MIL would put it in the fridge covered. I don't.
When the oil needs replacement, I pull out my second one. If the oil is still good, I will strain the old oil into the new FD and add more oil if needed.
I know I am the minority on this practice. But it works for me and I do not have to buy as much oil.
We do a lot of deep-frying.
This brings up an issue for me.
Frozen things like fries and chicken nuggets/tenders do not have any instructions as to deep-frying. They only give a recommended way to prepare them. The oven.
These things/products do not come out as good in the oven. Deep-frying them is the very best way and how I do it. No matter what the package says.
Not everyone has concerns with using oil. I see zero issue with it and will continue to deep-fry anything that will benefit from it.