Critter seed issues

[Steverino]

I have an 06 Sedan no A/C and had critters get into my dash ducting and had removed the cabin air filter and blower motor to clean out the seeds and nothing in that area. Must be in another area of the duct system and can hear the seeds slide around when a make a hard turn either way. Anybody have advice on what duct and how to remove it? The pests also put seeds above my headliner and can hear seeds when I let the sun visors snap back into the parked position. That I will probably have to remove the visors and dome light and suck as much as I can out with a shop vac. They also had got into my trunk and chewed some on the trunk carpet and filled a bag with jumper cables in it to the brim with bird seed mix. The weird part is my car is in the closed garage when not on the road or parked at work.

[Daox]

Turn the blower on max and blow out as much junk as you can. The only other option is to keep tearing apart the ducting.

[Steverino]

When I turn the fan on max I never get anything blowing out. I think the seed mix is too heavy to be picked up and tossed out? I have to look under the dash on the driver side to see what is accessible. I may just drill a hole in the duct and put a plastic plug into the hole after seed spills out and have the option to remove plug if it happens again.