Raccoons can be out during the day and be perfectly safe. From Wikipedia:
"Though usually nocturnal, the raccoon is sometimes active in daylight to take advantage of available food sources.
[148][149] Its diet consists of about 40%
invertebrates, 33%
plant material and 27%
vertebrates.
[150] Since its diet consists of such a variety of different foods, Zeveloff argues the raccoon "may well be one of the world's most omnivorous animals".
[151] While its diet in spring and early summer consists mostly of insects, worms, and other animals already available early in the year, it prefers fruits and nuts, such as
acorns and
walnuts, which emerge in late summer and autumn, and represent a rich calorie source for building up fat needed for winter. In the northern parts of their range, raccoons go into a
winter rest, reducing their activity drastically as long as a permanent snow cover makes searching for food difficult.
[161]"
They are also very smart animals. Killing only opens up the habitat for new animals to move in. Better to use electric fencing and teach the ones that are already there.