I am (almost) certain that PRESSURE TREATED wood is coated with various anti-mold agents that are potentially FATAL to your animals.
I am not 100% positive, but I would REALLY REALLY REALLY recommend you following up on that more....I'm pretty certain pressure treated wood is TOXIC. I know as a contractor we are supposed to use gloves/safety materials whenever working with this stuff.
EDIT: I did some research....
The United States Environmental Protection Agency (EPA) has reclassified certain wood-preserving chemicals--creosote, pentachloropophenol and inorganic arsenicals--as restricted use pesticide materials. The designation means they are toxic or poisonous and potentially hazardous to humans and animals.
http://www.ecologycenter.org/factsheets/pressure-treated_wood.html
Pressure Treated Wood is poisonous to insects, fungus, and bacteria. It is also poison to humans and other life forms. It is listed by the State of California (and most other states) as a carcinogen. Please note that not all types are necessarily hazardous, and ARSENIC based treatment has been discontinued. It is important to know the type of pressure treated lumber you have purchased!
http://www.epa.gov/oppad001/reregistration/cca/
TONS of official EPA information!
Cyproconazole, Propiconazole, and Borates are safe for above-ground, weather protected uses only, but ACQ and Copper Azole based treatments have been certified for use in freshwater/marine applications. Based on this I would *assume* that an ACQ or Copper-Azole base should be safe while the other 3 bases are likely unsafe. Personally though, I would not take the chance with any of them....especially if you aren't
certain what the treatment agent is.
http://www.uri.edu/ce/factsheets/sheets/chemwood.html
Pentachlorophenol and creosote treated wood should not be used where it may come in direct contact with drinking water for domestic animals and livestock.
Regulations prohibit use of pentachlorophenol and creosote treated wood in interiors of farm buildings where the wood may come into contact with domestic animals or livestock may bite, rub, scrape or lick the wood.
The cage is very nicely built, but unfortunately unless you know the specific type of pressure-treated wood you have and can ensure it is safe, it could be hazardous to your animals