Bladder fuel tanks

[GM.]

Curious about bladder tank longevity.
If an aircraft is housed in a climate controlled hangar, what is a good operating plan to ensure long tank serviceability? The tanks on this particular aircraft are a couple of years old and the aircraft is flown about 75 hours a year. Is the sloshing during routine flights sufficient to keep from drying out? How much fuel do you park your airplane with if it won’t be flown for a couple of months?
Or, is this totally a non issue due to todays new rubber compounds?

 

[140B]

 

[sanjiv]

 

[philiplane]

 

[Ray93J]

 

[Warriorgreg]

 

[comancheflyer]