Here in Florida, the introduced Huntsmen spider (Heteropoda venatoria) is considered beneficial in homes. They do not spin webs, but use their webbing for constructing flat, round egg cases which the female carries protectively every where she goes. They are active both day and night, depending on the lack of human activity around them. If you host one or more in your home, you'll never have cockroaches, silverfish or other insect 'visitors'. As with all spiders in general; they are shy, can survive long periods between meals and obtain water from eating their prey.