Excuses to beginf with: We have a 6 months old baby with severe eczema and a fair bit of reflux. This means a fair bit of washing. I am scrupulous about changing his mattress sheet -(every other day sometime every day - due to the amount of skin he leaves behind) and my bottom sheet ( we do a fair bit of co sleeping)
However getting a bit lax on our beds - both me and dh in separate King sizes - (mine is in the nursery) yes I know we are lucky - sheets fill up the washing machine, can't dry outside due to hay fever. Take the whole day to dry and then a pain to put on alone - especially on one bed which has a stupid lip all the way round at the level of the top of the mattress - not what I would have chosen - it is a hand me down.
Surely it is forgivable that I wash them ( esp dh s) less than once every two weeks maybe even every three weeks sometimes.