Bugs!

(i have 2 vft's in a terrarium, that i've had for about 3 weeks). after i bought them i notaced 1 or 2 little bugs flying around. But after i placed them in my terarium (still in there original pots) the bugs seem to have increased in numbers and size. They dont seem to be paying much attention to the vft's, but there increasing numbers have got me concerned.
what should i do?
and how harmful can this be for the vft's?

(the bugs look like little nats)
any info would be helpful.
-kelly

Buy a sundew such as D. Spathulata or D. Adalae.

OR

Replace the soil.

awesome!- i've been planning on putting them in my terrarium anyway.
-thanks