1 of 1
Story summary
- Philadelphia pest control firms operate seven days a week because resistant rodents have raised demand.
- Rutgers researchers found about 70% of mice sampled in New York City, Washington, D.C., New Jersey and Philadelphia carry resistance mutations.
- Rats lack the mutations but are learning to avoid traps and other extermination methods.
- Experts advise reducing pesticide use and improving sanitation, since new rodenticide development is slow and costly.
