Well, I check all my drains months ago and I recall another thread was going on at that time about the same subject. My Washer, bathroom sink and shower
all drain to the grey tank. The kitchen sink drains to the galley and of course the toliet (black tank). I dump the black tank about once a month usually. Just me...not too much crap
The galley tank could go two months, but when it is half full I dump it along with the grey tank when I dump the black tank. I have been surprised that I haven't had any odors all summer long from the black tank until it is pretty much completely full and I try to get another flush out of it and an air pocket from the vent gives a poof of air
that don't smell to good
2006 Montana 3500RL, MorRyde Suspension, W/D, 2nd A/C, Fantastic Fans, MaxxAir, Fireplace, RotoChocks, Slide Awnings. 2005 Ford F350 Lariat LE, PSD 4x4 Dually, Long Bed, C-Betr Mirrors, Vortex Spray-In Liner, Access Tonneau Cover, Remote Starter/Alarm, LED Running Board Lights