Purchase foods from reputable sources and from retailers that regularly check their peanut supplies for aflatoxins. Under some circumstances, stored foods (e.g. peanuts and cereals) can be attacked by moulds that produce very dangerous toxins. Foods should be stored in a clean, dry and cool environment inaccessible to pests. This will minimise the risk of fungal or bacterial contamination and will also avoid encouraging rats and mice. Keep a regular check on food provided in hanging feeders and try not to overfill feeders, otherwise uneaten food may remain in feeders for too long a period.