We claim the ornamental design for the insect bait station holder, as shown and described.
FIG. 1 is a front, top and left side perspective view of the insect bait station holder in accordance with the present invention;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a rear elevation view thereof;
FIG. 4 is a left side elevation view thereof;
FIG. 5 is a right side elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a front, top and left side perspective view of the insect bait station holder of FIG. 1, along with line A-A along which a cross sectional view of FIG. 9 is taken;
FIG. 9 is a cross sectional view of the insect bait station holder shown along line A-A in FIG. 8; and,
FIG. 10 is a front elevation view of the insect bait station holder of FIG. 1, shown in FIG. 2, but with the insect bait station shown inside of the holder.
The broken lines depict environmental structure and are for illustrative purposes only and form no part of the claimed design.