The Utah Department of Agriculture and Food hearings were scheduled for June 1, 2 & 3, 2010.
Bugman, Pest and Lawn, Inc., and its former contractor Coleman Nocks are connected with the deaths of the Toone sisters.
4-year-old Rebecca Toone and her sister, 15-month-old Rachel Toone died after becoming ill at their family's home in Layton in early February.
A medical examiner's report found that the Toone sisters "...had elevated phosphorous levels and lung damage consistent with inhaling a harmful substance."
Along with the criminal charges against Nocks, the Utah Department of Agriculture announced civil action and fines against Bugman Pest and Lawn Inc., the company that hired Nocks as an independent contractor.
The UDA also announced plans to revoke Nocks' contractor license.
Nocks also faces a $27,000 fine, while Bugman Pest and Lawn Inc. faces a $32,000 fine.
The Utah Department of Agriculture said that Bugman and Nocks, "...acted in a faulty, careless, or negligent manner and refused to keep an maintain proper records required for pesticide use...[and] used the pesticide in a manner inconsistent with its labeling or rules."
The UDA also cited Bugman and other contractors with allegedly breaking pesticide laws more than 3,500 times over the past 10 months.
The rescheduled dates will be determined during a hearing later this week.