We currently have 9 rats. Female.
They're in 2 seperate cages as our older ladies are not down with the yoof!
We mostly use Fuzzbutts www.fuzzbutt.co.uk and rat warehouse www.ratwarehouse.com for hammocks. Theres some other internet sites selling nice hammocks too, have a good look around.
I use caribiner clips from ebay to hang the hammocks etc. Much easier than clips.
We use supreme science selective rat nuggets as their basic diet, supplemented by various fruit, veg , pasta, chicken, porridge, yoghurt...
Sunflower seeds and pumpkin seeds as treats. Occasional yoghurt drops.
Read up on what rats can and cant eat. Dont let them eat apple or other fruit pips.
When cleaning out it depends on the rats. Some I can just let run around , one tends to like perching on my shoulder supervisin, others are a bit more skitterish so I put them in a carrier until I'm done.
If you can go for rats that have been well handled from a young age. They make the best calmest pets. If they come from a rescue or are rehomed have patience, they'll need time to get used to hands being near them let alone being touched. I find having a bonding pouch usefull. Let them play and explore it before lifting them in it. Same with carriers, let the rats explore and get used to them before use.
Make sure the cage you get has easy access, I once made the mistake of buying a cage who's main opening was at the top, I felt I was doing handstands to change hammocks, poo trays, put food in.
We also have a small hamster type cage that we use for nursing poorly rats ( had a few that needed surgery) , the idea being the rats wouldnt try to climb ( hahaha)
We also have heat pads for post op.
Ratwarehouse weight up baby porridge to encourage sickly rats to eat ( baby food is good too)