Help to stop condensation inside horsebox tack lockers

[Spottyappy]

I went out today in new horsebox.
It started to rain, so I went to grab a rug from within one of the external tack lockers, only to find it wet through from (I assume) condensation.
Any ideas what I can do to minimise this happening?
I don't really want a rug rack, but realise may need to go down this route if nothing else stops this.
TIA.

 

[cobgoblin]

Fill an old sock with cat litter and stick it in the locker....should absorb condensation.

 

[Spottyappy]

Fill an old sock with cat litter and stick it in the locker....should absorb condensation.

Excellent, thank you.
Will just need see if we have any left!

 

[Boysy]

De-humidifiers from any B&M or Wilkos/Savers or £1 shops, they are small plastic boxes filled with beads that absorb moisture, have them dotted all over my lorry and nothing is ever damp in there now. To be fair though I wouldn't expect condensation to actually soak a rug unless it's been sat in there for months on end, my rugs are in bags on a rug rack inside the lorry as opposed to outside but even my outside lockers never get soaked? Sure there isn't a leak in there?

 

[Spottyappy]

De-humidifiers from any B&M or Wilkos/Savers or £1 shops, they are small plastic boxes filled with beads that absorb moisture, have them dotted all over my lorry and nothing is ever damp in there now. To be fair though I wouldn't expect condensation to actually soak a rug unless it's been sat in there for months on end, my rugs are in bags on a rug rack inside the lorry as opposed to outside but even my outside lockers never get soaked? Sure there isn't a leak in there?

Thanks.
No leak, but gave been sat in there almost a year, not needed to use them until today!

 

[Nugget La Poneh]

De-humidifiers from any B&M or Wilkos/Savers or £1 shops, they are small plastic boxes filled with beads that absorb moisture, have them dotted all over my lorry and nothing is ever damp in there now. To be fair though I wouldn't expect condensation to actually soak a rug unless it's been sat in there for months on end, my rugs are in bags on a rug rack inside the lorry as opposed to outside but even my outside lockers never get soaked? Sure there isn't a leak in there?

This is what I have done when I was out and about during the spring as things were getting put away damp inadvertently.