TWOSCOOPS Jul 13, 2017 09:07 AM PHOS-CHEK Sighting PHOS-CHEK photo and comment are great! Thank you for some light-heartedness during this stressful time! We need it. Out of curiosity, I went to their website: "Home Defense PHOS-CHEK can be sprayed using most simple garden sprayers. The product is available as a concentrate or ready to use mixture. Homeowners can purchase a home kit that includes both retardant and sprayer." You learn something new every day!