pollnivneach slayer dungeon is the place where you can kill many slayer monsters. this includes:
banshees (lv 90)
cave crawlers (lv 138) <--- poisenous O_O
kurask (lv 106)
aberrant spectres (lv 96)
turroth (lv 82-89)
basilisk (lv 61)

i've personally only fought banshees, cave crawlers, and basilisks but i already know a few things.

to get into the slayer dungeon, you must have done smoking kills... pretty easy quest and definately worth the reward.
NEVER TAKE OFF YOUR MASKED EARMUFFS!!! if you do, you will take 20 damage every few seconds and DIE! o.o

when you pass through a barrier into a new place, you must kill a boss before you can kill the monsters.
Bosses:
Kurask Overlord lv 240
Mighty Turoth lv 180
Basilisk Boss lv 240 <--- NEED super stat restore
Monstrous Cave Crawler lv 180 <---- Poisenous O_O

Mighty Banshees

for banshees here is my recommended equipment for melee and range

melee:
MASKED EARMUFFS
best armor (besides head)
best halberd
obby cape
salve ammy (glory if you didnt do the quest)
ring of wealth (better drops by far)

range:
MASKED EARMUFFS
best D'hide armor
best c'bow/bow/knives/whatever
no shield
mithril+ bolts/arrows/knives/whatever
obby cape
salve ammy (glory if you didnt do the quest)
ring of wealth (better drops... alot)


NOTE: if using melee, use a halberd, otherwise you WILL lose hp very fast

there are many safe spot for the banshees. banshees must have two spaces to walk so its very easy to find one.
good safe spots:
along the west wall near the beginning are three rocks, go in the middle. no banshees can get you there
right near the entrance to the part is a tablelike thing and 2 rocks diagonal, go in all of those. banshees can only get you to the east which doesnt happen often
scattered around are places where theres 2 columns with 1 space inbetween, use that because they cant go through them
near the back is a place where there are 3 rocks and 2 columns so no banshees can get you there

INVENTORY for mighty banshees:
about 1k (to get there)
slayer gem if a task
6-8 pieces of monkfish
empty spaces

if melee, bring a close ranged weapon incase one banshee gets through while you're surrounded (it can happen)

Good Drops happening regularly:
2 herb drops (somtimes both ranarrs)
charms (alot)
coins
chaos runes
fire runes (not the best drop...)
cosmic runes
seeds


Cave Crawlers

same recommended equipment except amulet of glory instead of salve ammy
ring of wealth highly recommended due to ranarr drops. i got 4 ranarrs before 10 kills

Safe Spots:
i've never found any safe spot but i did find one once they stop being agressive.

right near the beginning, there are 2 red rocks and 1 regular rock. go inbetween to 2 red rocks. the only way a cavecrawler could attack you is if they come up the side.
once they stop being aggressive, attack one north east of your spot and run back inbetween the rocks. keep on doing that.


INVENTORY for cave crawlers:
3-4 antipoisens/2-3 super antipoisens (recommending super anti's) (might not need that much but its always good to have extra)
6-8 monkfish
slayer gem if task
close-ranged weapon for melee (highly recommended)
empty spaces

Good Drops:
2 herb drops (ranarrs included)
3 herb drops (ranarrs included)
seeds
charms

these cave crawlers are mostly for exp


Basilisk

unlike most other enemies, basilisks aren't aggressive.

Equipment Needed:
Masked Earmuffs
Mirror Shield

Basilisk Boss:
USE PROTECT FROM MAGE!!!
this is pretty much the only way to defeate it.
remember to drink super restores whenever u have to

Safe spot:
deep south west is a rock 1 square away from the wall, the basilisks cant get you from there since they need 2 spots.

Inventory:
slayer gem if a task
5-10 pieces of food
Zanik's crossbow (recommended for range)
Close combat weapon (recommended for range)
halberd
GP (to get there)
Free space

Regular drops:
1 herb
Charm drops (a lot)
Gold
3 law runes
75 water runes
steel battleaxe
15 nature runes
More to be added...

Use the upper right, north east, ladder to get to the cave crawlers. here are a few maps


http://www.runescape.com/img/main/kbase/skills/slayer/maps/desert_slayer_dungeon_location.jpg


http://www.tip.it/runescape/map2/pollnivneach_slayer_dungeon.png


i had to use urls cus the images werent working

just refresh the second link to get it, idk why its like that