Monday marks one month since New Canaan mother Jennifer Dulos was reported missing. Police now say their search at a Hartford trash facility – in connection with her disappearance – is expected to last a bit longer.

State police say they have been searching for evidence at the trash facility for three weeks now. They won't give specifics, but say they know what they're looking for.

State police are tasked with garbage piled to the ceiling. A pay loader lifts the trash and spreads it onto the floor where detectives sift through it with rakes.

Jennifer's estranged husband, Fotis Dulos, and his girlfriend, Michelle Troconis, are charged with tampering with evidence and hindering prosecution in connection with her disappearance.

Police say the two are captured on surveillance video throwing out trash bags at more than 30 spots in Hartford.

Tests confirmed Jennifer's blood was on the recovered items, which led investigators to the trash facility.

Fifteen to 20 investigators have spent 15 hours a day at the facility, and about a dozen search and rescue K-9s have been brought in as well.

New Canaan police continue to sort through nearly 900 tips and dozens of surveillance videos from the public.

Anyone with information is asked to call or e-mail the police department.