MTB flats every ride!

[caligurl]

ok ladies! help me out here, please!

i seem to get a flat EVERY time i ride my MTB! if not during the ride... it flats overnight from something getting into the tire (stickers?)

soooo what do you all do to help prevent a flat every time? so you use the slime tubes? do you use regular tubes with slime put into it? do you get an insert? if so.. which brand? (i found these at performance.. but they are $40!!!!! kevlar liners i also found slime ones: slime )

thanx!!!!!!