Hi there - sort out and tidy before cleaning.
Anything you haven't worn or used for a year which is in good condition, send to the charity shop or sell on eBay. Winter clothes should be washed/dry cleaned and I have a couple of big cardboard Ikea storage boxes I put them in to free up hanging space for summer stuff. In the autumn, summer stuff goes away and winter stuff comes out. Be ruthless - do you really need all of the rest of it? Bin the junk.
I don't keep anything under the bed, but if you don't have drawers under there, box it up to keep it clean and dust free. You can get flatter boxes with wheels designed to go under the bed.
Damp dusting is a good way of getting rid if dust without creating dust in the air. Use a lint free cloth and dampen it with water under the tap. I use old cloth napkins that are no longer good enough to use as napkins.
I just use warm soapy water on a cloth, well wrung out, to clean the tops if bedside tables, handles, light switches and dressing table top. Same for both sides of doors, skirting boards and door frames.
Start from the top and work down when dusting - dust the tops of tall furniture and picture rails.
I don't have nets so can't advise you, but I know you can buy sachets of stuff you put in the wash with them to keep them white.
For windows I have an e cloth set - one cloth for cleaning and a special one for buffing so you don't get streaks. You really do not need to use anything other than water with them.
Drawers - empty them, give them a wipe, let them dry. I use scented drawer liners or cedar blocks to keep things smelling nice and keep moths away. I prefer those and old-fashioned lavender bags/scented bags to chemical moth repellents. Some of them are too strong for my taste though - I like a fresh smell rather than a strong perfume.
Is the ammonia from the rats? I wouldn't like that - is it coming from their cages? I think probably the only thing you can do then is change their bedding regularly and keep them somewhere well-ventilated where you can open the windows regularly. If there is pee on the carpets then invest in a carpet cleaner and clean up accidents straight away.
I dust and hoover the whole house weekly in one go - some areas I hoover as they need it as well. I try to keep clutter down and have stuff stored in boxes and behind doors in cupboards, etc so the place looks tidy and isn't full of dust traps. I also open windows regularly to get fresh air in. I hate air fresheners as the chemical/constant pong irritates me. You could try Neutradol or little bowls of bicarbonate to absorb smells.
Hope that helps - that was an essay. Oh and I put a piece of cotton wool with a few drops of essential oil in the hoover to make the place smell nice. We have a dog and I don't want the place to smell 'doggy'.