Be careful with the sprays and things, they aren't good for anything with lungs and especially not for the chins. Scented candles away from the chins are okay, but not right next to the cage. LOL A candle near the cage could be a fire hazard...the chin could throw some hay in there and poof!
Be very careful with spraying anything in the air, there's a lot of not so great stuff in the aerosols and other sprays.