I have had black widow spiders (inside mullion panels) on every new building. disturb the soil & you get ants, spiders, etc

I like Malithon, 67% - kills many types of bugs, flies, ticks, fleas, roaches. the SECRET is regular applications - every 6 weeks

for mice/rats I like WAFRIN products see helena chemical or local form supply store for a 2 gal pail - you need them especially in winter when they come in from the cold.

See your COUNTY AGENT for advice, local remedies, etc. and handouts on this subject