This is common and usually an inside job. Mail and newspaper deliverers are not always scrupulous and get $$ from passing along who has canceled such services for their vacations. Don’t cancel your deliveries ever. Have someone pick up your mail and papers (yes, some people still get papers).
You need to thoroughly trust your gardeners and maids. Have them still arrive as usual, if you trust them, while you are gone. Consider even giving them presents or bonuses when you get back from trips. Encourage them NOT to be motivated to tell their cousin Jose that your home will be empty for a week. Help them feel part of the household, so they wouldn’t be part of robbing you. ( give them food or drinks, talk to them, befriend them the rest of the year. Appreciate them.) If you are on poor or distant footing with them, you’d better have a house sitter in your home while you are gone!
Who has the money for maids and gardeners?