We use
Bailey's Best British Oats (rolled oats) - 20kg sack for £6.95
Mixed flake (barley, pea, maize etc) - 20kg sack for £7.85
Mixed wild bird seed - 20kg sack for £9.30
Wafcol greyhound maintenance (dry dog food) - 15kg sack for £10.80ish
Lactol soaked bread a couple of times a week
It costs £100 a month to feed 100ish adult mice plus litters, so £1 per mouse per month.
Bailey's Best British Oats (rolled oats) - 20kg sack for £6.95
Mixed flake (barley, pea, maize etc) - 20kg sack for £7.85
Mixed wild bird seed - 20kg sack for £9.30
Wafcol greyhound maintenance (dry dog food) - 15kg sack for £10.80ish
Lactol soaked bread a couple of times a week
It costs £100 a month to feed 100ish adult mice plus litters, so £1 per mouse per month.