There have been many bad things said about various air fresheners for birds. The reality is that these products do NOT remove anything from the air they simply cover up bad smells with the odours of the materials in the product.
I saw something interesting recently about various phthalate esters in some of these things. These seem to cause problems with ALL vertebrates because they are estrogens. That makes them a hazard not only for the birds but for us as well.
Humans are funny creatures. They get all excited about a few pollutants, and then ignore others that are just as bad or worse than ones that cause all the excitement. Another is bisphenol-A from polycarbonates. This is an other powerful estrogen, in fact it was originally developed as a pharmaceutical, and then used to make polycarbonate plastics. They make high impact strength bottles from this. This is a horrible thing to do both for birds and for us.
For an air freshener nothing is better than an open window! (If the climate permit!)
The sensible thing seems to be to use no air fresheners either around birds or elsewhere!











