Hey, it could be possible for them to put things in their mouths so life threatening as that.... so i recommend that you change their substrate as on the bark you are getting them can easily impact them (which may even cause death). Also whatever you use please do not use Cedar as it is toxic to these reptiles.
There is an abundance of products on the market that claim to be safe substrates. Most however are not safe to use. A substrate is what you put on the bottom of the cage for the lizard to walk around on. If a Leopard Gecko ingests any of the substrate accidentally the substrate must pass through the digestive system.
Trust me they will ingest substrate, sometimes on purpose. If it does not easily pass through the digestive system compaction will occur. Compaction is an extreme blockage of the digestive tract and is often fatal. Some substrates that I consider unsafe because they can cause compaction are: sand, orchid bark, crushed walnut shells, lizard litter, gravel, aquarium gravel, and coconut fiber. The safest substrate is using paper towels or plain newspaper. For any leopard geckos that are younger than six months I advise using paper towels or plain newspaper until they are at leat six months old.
Young Leopard Geckos get compacted very easy even with some of the close to safe products like calcium carbonate substrate. Once the Leopard Gecko is Six months or older you can then switch to Calcium sand. Calcium sand is not fully digested no matter what it claims. The stuff just does not break down completly.
Though it does break down some and is much less likly to cause compaction than regular sand. I advise using esu caclium sand because they have finer particles.
Hope this helped :)
· 1 decade ago