Gery Bierhoff was born in the Netherlands. He came to Australia as a young man, and was involved in  agriculture in  Queensland, specialising in irrigation cropping in the Lockyer Valley and Darling Downs.

After marrying Monica, they became involved in the cotton industry and managed several cotton properties in the Downs and Gwydir districts.

In 1986, they bought the Moree franchise from W A Flick & Co, after training in Pest Control in Dubbo, in 1996 adding the Goondiwindi franchise.

In 2001, they went independent and started trading as Bierhoff Pest control, still servicing the same areas, covering the towns and districts of Moree, Narrabri, Wee Waa, Burren Junction, Collarenebri, Mungindi, Goondiwindi, Talwood, North Star and Gravesend.

Besides being fully qualified in pest control, Gery Bierhoff is also a licensed fumigator, fumigating on farm storages, and bunkers, also does export fumigation of raw cotton, cotton seed and other grain products in containers using both phosphine and methyl bromide.  Pest Control Moree

In 1989, Gery and Monica qualified at the the Tamworth TAFE for the pest control certificate, in 1993 received with credit a pass in the AEPMA "Specialist Termite and Timber Technology Course". 

In 2002 Gery completed a course in termite inspection, monitoring and eradication using the Intrigue termite powder, and in 2003 he was appointed authorised Exterra  installer using Exterra Termite Interception and Baiting System.