Origin and Extent of Termites in Guelph
Subterranean termites are non-native invasive insects that can cause serious structural damage to homes and can be difficult and expensive to control. These insects have been accidentally introduced from the United States to over 30 Ontario municipalities. The termite infestation in Guelph was first detected in the early 1970s near Goldie Mill Park. Currently, in Guelph, there are three designated Termite Management Areas, all on the north side of the City, encompassing 869 properties.

Preventing the Spread of Termites
New infestations can become established by the movement of infested wood or soil. Therefore, all residents of the City should be cautious about donating or receiving any wood items that have been sitting outdoors on the ground, such as firewood, landscaping ties, wood sheds, mulch, etc.

Disposal Procedure
Residents in Termite Management Areas are required to comply with strict disposal procedures to restrict the potential spread of termites to other areas of the City. The disposal procedure is as follows: 

Sale of Property When selling a property in a Termite Management Area, the resident or agent is required to disclose that the property is within a Termite Management Area and obtain a termite inspection report from the Termite Control Officer. The owner or the agent (with written authorization) should arrange the inspection by calling 519-837-5614.

Landscaping and Renovation
Landscaping, renovation and new construction can also be affected in termite areas. New fences should be constructed on non-wood materials or if wood posts are used they must be pressure treated and supported above ground on metal brackets. Retaining walls must be constructed of non-wood materials, not pressure treated wood. In addition, the Ontario Building Code has specifications for construction of new buildings, porches, and decks that pertain to termite infested areas.

Comprehensive Control Strategy
Under the direction of the Termite Control Officer, the City has a comprehensive strategy for termite management and control. This involves inspections, monitoring properties with traps, reduction of termite habitat through yard wood management, area-wide colony level suppressive treatments, and limited utilization of conventional chemical treatments where necessary.