If they still make it, Lifter1 is excellent. Also pretty much any house-carpet cleaner like Resolve should do the trick. I've also had luck with the Bissel Green Machine steam cleaner in trucks and vans. Good luck.
1989 S-10 4x4 4.3L/700R-4, 3.08s, 31" Sport Kings
1989 Blazer 4x4 4.3L/700R-4 3.42s,235 Sport Tracks
1985 S-10 4x4 Soon to have 3504BM/TH350/D44/14FF, 35" Boggers