Not got a moth trap ?

3.5 Sugaring
Moth traps will attract the greatest variety of moths, but not all moths are equally
attracted to light. Some can be observed using sugary bait instead. Moths come to
“sugar” because they feed on nectar, sap
and honeydew, all of which are unrefined
sources of sugar (however, some moths do
not feed as adults, and therefore will never
be seen at sugar sources). The success of
the technique is variable – warm humid
nights with a light wind are best for
sugaring (as they are for most forms of
mothing), but the technique will also work
on far from ideal nights, and not work on
nights that seem good for no apparent reason.

to read more and see how its done and the recipes for the sugar solution click Moth count

You can get moth traps lures etc from the company below