RE; Pressure relieving mattress cleaning/decontamination

We currently send our mattresses away to a 3rd party for cleaning, but we are now looking at doing as much as possible in-house.
Our ideas are to wash the mattress covers on a rolling monthly cycle(we need to purchase a number of additional covers so that the mattresses can stay in use).
We haven't got the facilities to clean the mattress cells, so we will still be using a 3rd party for this work - just need to find a cheaper option than the OEM. Plus, we will have to purchase/hire a stock of mattresses to replace those that have gone for cleaning
We may try and see if we can get our SSD(sterile services)to clean the mattresses. That's if our SSD stays in-house - we don't want to lose our SSD to a regional centre...

How do your depts manage your mattress cleaning/decontamination?

Cheers