What you can do to prevent rats

Source Reduction 

Good environmental management practices are the most effective approaches to roof rat control. Sanitation and good housekeeping are the first steps in a successful rat control program. The homeowner can help control rat populations by doing the following:

  • Harvest all fruit, especially oranges, avocadoes, peaches, apricots, plums, walnuts and tangerines as soon as they ripen. 
  • Never leave pet food outside overnight.
  • Keep pet food in sealed metal containers if stored in the garage or other outbuildings.
  • Keep palm trees and yucca plants well trimmed.  Algerian ivy, oleander, bougainvillea, and other thickly matted plants should be periodically thinned and trimmed well away from roofs, walls, fences, utility poles, and trees. For a complete list of plants that rats nest in, click here.
  • Store wood and lumber piles on racks at least 18 inches above the ground and 12 inches away from walls. Storage boxes housed in utility sheds should be stacked close together and in an orderly fashion.  Clean up debris piles.
  • Repair leaky faucets and eliminate any other unnecessary standing water.

When renovating the yard and/or planning new landscaping, undesirable landscape vegetation should be eliminated from the plans and replaced by vegetation types that do not afford harborage to rats.  A list of alternative landscaping (e.g. ground covers) is available on this website.

 

What you can do

When it comes to rodent control around your own house, there are a number of things you can do to make your house "less attractive" to rats. Some actions are as simple as bringing in pet food at night, or harvesting fruit in your yard, to exclusion techniques you can use around the house.

HABITAT MANAGEMENT 

Roof rat survival and prosperity are dependent upon the existence of three basic environmental conditions:

  • Abundance of food
  • Available source of water
  • Access to suitable harborage

Good environmental management practices are the most effective approaches to roof rat control. Sanitation and good housekeeping are the first steps in a successful rat control program. The homeowner can help control rat populations by doing the following:

  • Harvest oranges, avocadoes, peaches, apricots, plums, walnuts and tangerines as soon as they ripen. Pick up all fallen fruit.
  • Never leave uneaten pet food outside overnight.
  • Keep pet food in sealed metal containers if stored in the garage or other outbuildings.
  • Keep palm trees and other plants well trimmed. Algerian ivy, creeping fig, oleander, bougainvillea, and other thickly matted plants should be periodically thinned and trimmed well away from roofs, walls, fences, utility poles, and trees. For a list of plants that rats often nest in, and plants that generally do not attract rats, consult our bulletin, California native plants for the home landscape.

Store wood and lumber piles on racks at least 18 inches above the ground and 12 inches away from walls (click here to see video). Storage boxes housed in utility sheds should be stacked close together and in an orderly fashion. Clean up debris piles. Repair leaky faucets and eliminate any other unnecessary standing water.

When renovating the yard and/or planning new landscaping, undesirable landscape vegetation should be eliminated from the plans and replaced by vegetation types that do not afford harborage to rats.