Ant problem and elderly tennant

[Brandon Blakley]

I had a pest control company come and inspect an ant problem in my 4 plex and it turns out that it is pretty severe and they recommend spraying the crawl space and exterior of the unit. They will out baits inside to kill the existing ants but need to spray to prevent others from coming in.

I feel that I must address it before it continues to Escalade but I have an elderly tenant who is adamant that spraying is a health concern and stated that his doctor strong discouraged it.

He is a good tenant on a month to month lease so and I want to comply with his wishes but I am concerned that the ant colonies in the structure will get out of hand and cause mold and odor (per pest control guy).

Has anyone experienced pesticide and have a strong feeling about it? I feel that I will have to end his month to month lease if I want it treated and feel guilty to do so to an elderly tenant. Thoughts?