Office calculation assumptions:
Labour cost: £12 per hour; £ 0.2 per minute
Hive (10 Abbees) cost: £195 per month
Labour time vacuuming: 1 hour per 350 sqm
Labour time to manage 1 hive: 20 minute ==> minutes
1 hive (10 Abbees) can vacuum 700 sqm in 90 minutes
Area is vacuumed every weekday: 22 days per month