The deal will see Rentokil add 200 employees to its M&E and maintenance operations from MSS Facilities Management.
The company has an annual turnover of £22m and operates from two principal trading sites in Manchester and London.
Rentokil’s existing M&E and building services business operates within the Initial Facilities division.
MSS currently works for a number of blue chip clients including AXA, E.on, Grant Thornton and United Utilities.