BOUNTIFUL, Utah (AP) -- A Utah pest exterminator says he's haunted by the deaths of two Layton girls at a home he treated with pesticides for a rodent infestation in February.

Coleman Nocks tells KSL-TV that whatever happens in his criminal case, nothing will bring back 4-year-old Rebecca Toone and her 15-month-old sister, Rachel.

Nocks is due in court Tuesday for a pretrial hearing. He has pleaded not guilty to misdemeanor negligent homicide stemming from allegations he applied too much pesticide too close to the Toones' home. If convicted, he could face up to two years in jail.

Nocks worked for Bountiful-based Bugman Pest and Lawn. The company is nearing a Utah Department of Agriculture settlement over records violations.

The company civil agreement would be separate from Nocks' criminal case.

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Information from: KSL-TV, http://www.ksl.com/

Copyright 2010 The AP.

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