Rats breed and colony size increases when the supply of food and water is steady and abundant in quantity. In order to prevent future infestations follow these guidelines:In terms of rat control an ounce of prevention is worth more than a pound of cure. After an infestation has been dealt with—or better yet, before it establishes itself– the key to a permanent solution to rat infestations is to make a property less attractive to rats. This requires a certain amount of effort and dedication to ongoing maintenance on the part of the property owner but the labor expended is well worth it.