Croydon-based Cleankill Pest Control is advising homeowners to adopt its seven simple steps to avoid rodent infestations this winter.As the nights draw in, and food and warmth become scarcer, rats and mice will begin to view our centrally heated homes as desirable nesting sites for the winter months. Cleankill is now reporting an increase in rodent infestations at both business premises and households and is taking the opportunity to advise customers on the best ways to avoid an invasion.