Little pest on my mushrooms ID??

[dons]

Can anyone ID this, think they are flatworms but am not sure. Wanting to come up with a treatment program. Based on some input from my son, I bought a six line today to see if it would attack them. But not sure it that's the correct ID or solution. Took this with my new macro lens but would like better detail.
<fieldset class="gc-fieldset">
<legend> Attached files </legend>

>

class="gc-images" title="flatworm2.jpg[/IMG] style="max-width:300px" /></a> </fieldset>

 

[lilrobb]

Planaria,

the sixline will end that problem pretty quickly...

 

[jennm]

Or you can FW dip the colony... that will knock them out in less than a minute.

Only problem is there may be others, not on the colony. They do tend to gravitate toward mushrooms though.

PraziPro should knock them out too - but FW dip is easiest/quickest.

Jenn