Posted: Wed Jun 22, 2022 6:54pm
We had a major infestation with them in Torremolinos but we did get rid of them with an Italian product that cost 20 Euros. Careful placing of drops of the stuff and sealing every possible gap with silicon, they eat through filler. When I say every I mean it, Inside switches, power points, conduit, Steel wool in the A/C condensation outlet pipe, light fittings water and waste pipes entry points. overflow outlets, Door seals, frames and surrounds, insect nets, after that 3 months the only time we saw a roach was if a door had been left open all day. Here in Torreta 2 this year after 3 years (And treatment like the other place) we have only the occasional 1 or 2 a year. Just recently we had 3 in 4 days, They got in through a small gap by one of the sky lights. Sealed and we haven't seen any since, fingers crossed my wife has a phobia about them. Btw Ensign wasps are killers for roach eggs and have excellent olfactory senses so if one comes in your home just let it be, no pun intended
Ants on the other hand are a different problem. I bought various stuff from garden centres and Leroy etc but all pretty useless. I went back to the old methods. Find what they like, Sugar, Honey, peanut butter, Spaghetti Marmite, Chicken, Lamb etc. Then mix it with Borax in fine powder form. Track down the rough location of their nest from their traffic. I have just got rid of a big nest using mashed chicken breast mixed with borax. I placed the stuff on a a piece of plastic, after about an hour it was black with 100s of ants, each day there were less, today the 4th day, there were only a couple around this morning and at the moment there are none! Add a few drops of water to keep the mix moist a couple of times a day. Borax can be bought from amazon, it was about 8E for 500gr last year. They seem to have different tastes so just try to find out what they like. Incidentally Borax has medicinal uses too.
Btw Ant nests in flower pots can be gotten rid of with a solution of Borax and water and watering with it, check out quantities on the net.