I have only ever seen two rats in the garden (one that my neighbours cat killed ^in the middle of my DDs birthday party ) and one deposited on the lawn.
Plenty of mice though, little tiny field mice that can get through the teeniest space.
I think as long you you take up any leftover food and clear up round the hutch , it should keep them away. Make sure your huttch is secure, I wouldn't want a rat in the Pigs House, mice though I can't control.
Have you got fine gauze mesh on the cage(it needs to be fox safe too so you might need a double layer?) Use a good hutch cleaner, (I use a steamer to deep cleanse and Virkon S if I'm introducing a new piggie or when we deep cleanse the empty Pighouse if they're on holiday)
Rats wee does carry the risk of weils Disease to humans, and I am not 100% sure what killed off our young boar last year but there's a bacteria in wild rodents pee that can cause diarrhoea in cavies which is what he had but none of the others affected, so I'm .
I reckon in my garden the foxes would eat the rats ( so they are useful for that I s'pose)
Ummmm. We used to live by the river and a tube line and had the occasional rat. After an incursion by a particular large and has bastard just as we were to get guinea pigs for dd, the nice man from rentokil told me things like guinea pigs ate rat magnets and not to do it in our location. Breaking I to dd was more unpleasant than the rat I can hear the howls now. She got kittens though x. And we never had another rat. Kittens ate now elderly cats.
We also have decking which apparently is also a rat magnet! We had been keeping their hutch open when they were in the run but we now shut it so the cheeky things won't get in (don't know if they have but not worth the risk).
We live edging a field so it's not surprising that we have rats and not entirely sure how possible it is to eradicate them!
Sorry to all you pet rat owners, feel bad writing this!