They are very cute!
How wonderful! Are these your first piggies?
I use Carefresh bedding because it is very absorbant. Piggies pee a lot...
as you will see, so that is why i prefer the Carefresh. Aspen is not as absorbant. Piggie pee will be stinky if the bedding does not absorb it up enough.
Wood based shavings, in my opinion is too messy with piggies because they run around a lot and tend to kick it out of their enclosure. Also some piggies tend to chew it and that can lead to problems. It can be a bit dusty, fine dust particles and it may irritate their respritory system.
Here is some good info to consider
smell pleasant and absorb urine and odors
are not too costly
cavies may chew on the bedding leading to health problems
sharp particles may harm your cavy's eyes or feet
fine dust from wood shavings irritate their lungs and may lead to allergies
There are types of wood shavings that make a good source of bedding, these are:
Kiln-dried Pine (recommended by some and not by others)
Never use cedar or plain Pine wood shavings!! These have oils in the wood that can be extremely harmful for your pet.
Use of wood shavings is mostly discouraged, but from a finacial point of view, they are usually more affordable.
*Recycled shredded or pelleted paper products:
Good for long-haired cavies
Softer for cavies with sensitive feet
You can make an excellent bedding using this on the cage floor and adding a light layer of hay over the top.
Can be expensive
Brands to try: Yesterdays News or CareFresh
There are also different varieties of fabric, fleeces, flannels you can use as bedding. .
Some cavy owners simply use black and white newspaper as a layer on bottom of the cage and add a layer of CareFresh on top. This makes cleaning a snap, as you can simply roll the newspaper up along with the hay.
*Whatever you use, please be sure to change the bedding at least once a week.... Or as often as necessary.
Check out this link for good piggie care.
Guinea Lynx :: A Medical and Care Guide for Your Guinea Pig
Guinea Lynx :: Bedding
You will find what works best for you and your situation.
Why type of enclosure will your piggies have?