Two words: Dog whistle
oh boy do they hate it!!
https://www.google.com/shopping/product/5639740844815513647?lsf=seller:8064,store:12395729436163259491&prds=oid:2977644050437240630&q=dog+whistle&hl=en&ei=YhIWWrWeF9SajwOLr6DYBw&lsft=utm_source:google,utm_term:5002019,utm_medium:cpc,utm_content:GSC+-+Medium+-+Hardgoods+-+Dog+%7C+Training+&utm_medium=cpc&lsft=gclid:EAIaIQobChMIxbOc0LTT1wIVgWd-Ch1IFAjHEAQYAyABEgIf__D_BwE
or this...a bit pricey but works...
https://jet.com/product/detail/fb5bc9ed61c8409abf800086dc32a7f9?jcmp=pla:ggl:nj_cons_cwin_pet_supplies_a3:pet_supplies_cat_supplies_cat_training_behavior_aids_a3:na:PLA_751232115_39442960516_pla-321596007835_c:na:na:na:2PLA15&code=PLA15&pid=kenshoo_int&c=751232115&is_retargeting=true&clickid=866512fa-934b-4ac6-bddc-468e556a3b08&gclid=EAIaIQobChMIxbOc0LTT1wIVgWd-Ch1IFAjHEAQYAiABEgKee_D_BwE
Dog whistle .... you will probably attract a lot of Progressives and leftist MSM!!!