No spray near those nostrils
@Michael Reynolds better off the spray for the cage or if it was on the legs (perches) its active ingredient is Permethrin which is for external parasites like mites, lice, ticks, fleas and mosquitos and can only be used in well ventilated room clearly states on the instructions "avoid the head, non-feathered parts, eyes, nose, ears, beak and anus"
@Trum that is scaly mite (Cnemidocoptes pillae) they are a burrowing mite not a surface mite. You need a product with Ivermectin in it. You can get Baephar spot on to treat it. Used to treat it by killing the little perishers using vasaline smeared on the cere but that's now classed as an out of date thing too.
Beaphar Anti-Parasite Spot On For Small Birds 4 week Treatment For Canary, Budgie : Amazon.co.uk: Pet Supplies
Can buy it cheaper than that in many pet shops. but wanted to show you what it looked like