Meteor wrote: They were eating carrots and potatoes until I saw Peter's post...
They are on egg cartons and there is an heater behind the box. I have never given them water but the food lays in water before feeding - it will stay fresh longer.
To be blunt and to the point and hopefully not too rude but the food in this photo is a total waste of time, money and effort and the egg cartons are about as much use as a chocolate teapot.
Roaches mouth parts are designed to eat SOFT foods and NOT the whole hard biscuits that seem to be in the tub. The biscuits need to be dumped in the bin and some high protein cat crunchies (like
THESE
) need to be ground down into powder so the roaches can eat the powdered crunchies easily (I use an old coffer grinder) and those egg cartons need to be stood upright and the entire container needs to be covered with them like in my photos.
I have a 35in x 12in heatmat on 24/7/365 no matter what the outside temps are because to breed roaches they need to be HOT 24/7. If the shrew eats that many roaches, you need to get some turks asap. Get as many as you can afford as the more you start with, the more they will breed and you will soon have more than you need.