Here in the United States, but what are your manufacturing? Complete fabrication of pharmaceutical or just re-packaging or only warehousing? That will determining your level or risk. This will be based on risk.
Have Pest Control Service Provider conduct at minimum a monthly service of exterior rodent bait stations and interior glue trap stations and maybe interior flying insect lights. This provider will conduct a survey and recommend services needed. Ensure all doors, windows and openings are sealed with daily removal of all trash and employee lunches. These providers also track all activity and will trend these out so that you can assess and make changes and corrections as needed and present this to any audits or customer requirements.
Research and look into GFSI requirements (BRC, SQF, etc.) in the Pest Control sections to see what is required to meet those minimum standards.
1. Eliminate the food or the attractant for pests.
2. Seal off points of entry.
3. Install traps, rodenticide, for potential pests that may penetrate facility.
4. Work with pest control provider for best practices to prevent/eliminate pests.