I have several Yii based sites and the contact form is with captcha.
In the last few weeks I get spam messages from contacts/reservation forms.
The spam is from bots for sure, because in the datepicker input it puts some sh!tty data.
Is there some trick to improve the captcha or some other solution?
My current solution in one of the sites is just date validation, but I can’t do this on simple contact form, because there isn’t a date field.