Bonaweite Disposable Non-Woven Birdcage Liners vs Penn-Plax BA639 Gravel Paper, 11" x 17" | Great for Hard-Billed Birds | Clean, Easy and Safe for Birds | Aids in Digestion

No sources that perform objective hands-on testing have deemed the Bonaweite Disposable Non-Woven Birdcage Liners worthy of being included in their Birdcage Liner roundups, which typically isn't a good sign.

As for the Penn-Plax BA639 Gravel Paper, 11" x 17" | Great for Hard-Billed Birds | Clean, Easy and Safe for Birds | Aids in Digestion - it wasn't considered to be a good enough purchase to earn a spot in any roundups conducted by sources that perform objective hands-on testing, which typically indicates that a product isn't worth its asking price.

As a last step, we wanted to do a head-to-head Bonaweite Disposable Non-Woven Birdcage Liners vs. Penn-Plax BA639 Gravel Paper, 11" x 17" | Great for Hard-Billed Birds | Clean, Easy and Safe for Birds | Aids in Digestion comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.