I wouldnt recommend pine shavings for guineas if they have sensitive respiratory system instead try Aspen
Pine shavings are great bedding. LA Guinea Pig Rescue has a huge bundle for only $25 (it lasts me about 4 months and I have a 3X5 cage). Fleece blankets without an absorbant lining are not good bedding- unless you have something underneath to absorb the urine, that is.
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