Rodents, particularly rats, are responsible for substantial property damage. They may transmit diseases that could affect public health, such as murine typhus, plague, hantavirus, salmonellosis, trichinosis, leptospirosis, and rat-bite fever. To report code violations that are contributing to a rodent problem, such as tall weeds/grass, trash, or debris, contact our office at:
972-875-1234 M-F 8a. to 5p or Click Here . The City of Ennis Department of Health Services will conduct an investigation and pursue legal action if necessary to bring the property into compliance.
What to do if you have rodents
You've spotted a rat on your property. What next?
NOTE: For rodent control inside your home, contact a private licensed exterminator. To report code violations that are contributing to a rodent problem, such as tall weeds/grass, trash, or debris contact the City of Ennis Department of Health Services. The Department's staff will conduct an investigation and pursue enforcement action if necessary to bring the property into compliance.
Tenants experiencing rodent problems in multi-family or commercial rental property are advised to contact the City of Ennis Department of Health Services. Landlords are required by the International Property Maintenance Code to maintain their rental property free from rodent or insect infestations.
To report a problem, by contacting the Department at 972-875-1234 M-F 8a.m. to 5p.m. or Click Here.
The City of Ennis Department of Health Services can assist you in controlling rats on the outside of your property and in your neighborhood. We send out staff to inspect your property, place a tamper resistent bait station in a rodent-attracting location outdoors and advise on how to help prevent rats.
Rodents are a fact of life but we can reduce their numbers by working together. The success of the Departments program is dependent upon your cooperation. You can help keep rodents away from your home by depriving them of food and shelter.
Follow these simple guidelines:
Keep your entire premises clean. Seal garbage in tightly covered metal or heavy rubberized containers; don't use containers like bags or boxes. All garbage should be bagged before it is placed in the sealed containers. Drain and wrap food waste before putting it into can. Keep cans at least 18 inches off the ground and keep can area clean.
Store food and food contact items in rat-proof rooms and containers. Don't store food in the garage or outside. Clean up any spilled food immediately. Don't leave out uneaten pet food. Clean dog droppings up daily. Don't put bird seed on the ground; rodents will get it first. If you use a bird feeder, the area under and around it must be kept free of seeds and hulls.
Seal cracks or breaks in your foundation and repair holes in floor around pipes, screen doors, windows, vents and other openings into your home to prevent rodents from entering. Outside steps should be made out of concrete/masonry. Keep the space beneath wooden steps clean.
Keep all material stored in the basement, garage or outside at least 18" off the floor. Set furniture and appliances flush with the wall or far enough away so that the space between them and the wall can be easily cleaned. Keep all areas clean
General Information about rodents
Disease Transmission by Rats
Rats and mice are responsible for the spread of a number of diseases, either directly, by contamination of food, or indirectly, by way of rodent fleas and mites.
Physical Damage to Property
Rats continuously gnaw to keep the growth of their teeth in check and to gain entrance to obtain food and shelter. Rats destroy approximately ten times more food through urination and defecation then they actually eat. Additionally, numerous fires have been started by rats chewing through electrical wiring.
Recognition of a Rodent Problem
Important signs of a rodent infestation are:
Behavior of the Norway Rat
Norway Rats, as well as other rats, prefer food with a high carbohydrate and protein content although almost any type of food will be taken, food items in household garbage provides rats with a balanced diet.
Indoors, the Norway rat prefers to nest around the floors of buildings, but when populations are large, it will occupy attic areas, suspended ceilings and under floors.
Outdoors, the nesting places are often in burrows alongside of foundation walls. Rat burrows start out usually short, varying between 12-30 inches in length. As the rats mature, begin to rear families, and the population grows, the burrows become enlarged and expanded.
The territories of most rats are between 50 and 150 feet radius around the nest. If need be, however, rats will travel 1300 feet or more daily to obtain food and water. In urban areas most rats remain around the buildings and yards which provide their necessities, and unless they are disturbed, they do not move great distances.
Rats constantly explore and re-explore their surroundings, but are wary of new foods, new objects, or changes in their environment. This is termed "neophobia" which means "a fear of new". This neophobic behavior may last for several hours or even for several days. Even a change in position of a familiar object causes suspicion. This is why traps and bait boxes are sometimes avoided for several days.
Behavior of the Roof Rat
Roof rats can be thought of as the "vegetarians" of the commensal (The word commensal is used to describe rodents that are generally found living in close associations with humans and very often dependent upon human habitat for the
essential elements of food, water, shelter and space) rats as they prefer to eat seeds and plant foods such as fresh vegetables or fruits. The roof rat is appropriately named because by nature it is a climber and commonly lives above the ground in "roof" or aerial areas around structures.
Rodent Control Measures
Food source removal is a key component for successful rodent control. Garbage, food, or feed should be stored in sealed containers. Spilled food and garbage should be cleaned up regularly. Outside debris and vegetation should be eliminated, as it provides essential harborage. Use the following checklist to ensure your property is protected:
The most effective and permanent rodent control is to keep rodents out of buildings. Doors, windows, screens, and cracked concrete are all areas where rodents can gain easy access. Be aware of openings near the top of buildings as well. Roof vents, eaves, attic vents, overhangs, and roof top air conditioning units provide access to wall voids and other areas in a structure. Down spouts need a screen on the bottom as well as the top.
Baiting and Trapping
A successful rodent control program will combine the elements of baiting and trapping to achieve the highest rate of success. With any rodenticide, bait acceptance is the key to good control. Inert ingredients must appeal to a rodent's sense of taste and desire to gnaw. Start your baiting program by determining the severity of the infestation. Keep in mind that if rodents (particularly rats) are seen in the daylight then the problem could be quite severe.
Use a versatile bait station (one that can be re-located ) along walls, in corners, under pallets, appliances, and other tight areas.
Place stations every 15-30 feet for rats and every 8-12 feet for mice. The use of bait stations in which the bait is secured inside the station is recommended for the following reasons:
Non-poisonous Trapper Glue Boards are a useful tool for monitoring and capturing rodents. The effective use of glue boards depends primarily on the correct placement of the boards. Identify rodent runways and harborage, place the boards directly in the runway, flush against the wall between the rodents harborage and feeding areas.
Factors that limit glue board effectiveness are dust, moisture on the rodent's foot pads and the boards become ineffective with age
There are three species of rodents which are of most concern:
The house mouse is identified by a small slender body. The ears are large, the tail is semi-naked and is as long as the head and body together. The potential reproductive capabilities of rodents are impressive, a female produces 4 to 7 pups per litter with a gestation period of about 19 days. If conditions are good, she is capable of giving birth every 24 - 28 days.
The Norway Rat has a stocky body. The tail is not quite as long as the body and head together. Norway rats weigh between 12 and 16 ounces. This species is larger, stronger, more aggressive, and better adapted for producing young and surviving in colder climates then the roof rat.
Roof rats are smaller and sleeker in appearance then the Norway rat. Their ears are larger, and their nose comes to a more pronounced point . Whereas Norway rats live in burrows or under floors, Roof rats prefer to live in areas elevated above the ground. Theoretically, one female rat could have from 3 to 6 litters of 6 - 10 offspring per year. In other words, one adult female could be responsible for 320 million descendent within a period of three years.